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How to Care for Smooth Hydrangea

Smooth hydrangea (*Hydrangea arborescens*) is a deciduous shrub, naturally found on streambanks, gorges, and wooden slopes in many parts of Northern America. It is commonly recognized by its showy inflorescences - big white corymbs which bloom during summer. Smooth hydrangea is often cultivated as an ornamental, and it is an excellent choice for a border plant.
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care_basic_guide

Basic Care Guide

Cultivation:WaterDetail

How to Water Smooth hydrangea?

Smooth hydrangea demands a very large amount of water. The recommended watering frequency is at least three times a week. Please note that the frequency should be appropriately increased in dry areas or during hot summers. The soil should always be kept moist, but free of accumulated water. The watering frequency may be adjusted in different seasons according to this criterion. Furthermore, water should be quickly supplemented if smooth hydrangea leaves begin to wither.
Cultivation:WaterDetail
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What’s the best method to water Smooth hydrangea?
Soaker hoses can be the best method to keep the moisture from the leaves and flowers. These methods are great when you want more efficient water delivery at the very base of the plant without needing to get the entire foliage wet.
Lay the hose around the plant, leave it on for about 30 to 45 minutes and wait until the soil is moist but not too wet. Hook your regular hose to this, and cover with mulch. Others may use drip feeders to retain moisture throughout the day.
When planted in pots, you need to water the Smooth hydrangea using a watering can. Wait until you see that the water is dripping down the pots at the bottom part. The portable cans can help you reach the soil and let the water penetrate the roots deeply so they can grow better.
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What should I do if I water Smooth hydrangea too much/too little?
If you overwatered Smooth hydrangea, you might want to take a few steps back and prevent further damage. Smooth hydrangea is hardy, so they have a higher chance of surviving. Give the plant a chance to dry everything out and stop watering it. The plants don’t tolerate their roots sitting in water for longer, so aerating can help.
Some of the symptoms of an overwatered plant will be premature falling of yellow leaves. You might also see fewer flowers and misshapen buds. In more serious cases, this can result in wilted and brown leaves. Long-term overwatering can result in root rot.
The symptoms of underwatering can be similar. Wilting Smooth hydrangea can be a sign of underwatering. Feel the earth by sticking your finger into the soil, and if it’s too dry, then this is a sign of dehydration. Too little watering can also happen, so you might want to add some in the evening. Always check the soil for dryness and follow the regular schedule of watering in the morning.
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How often should I water Smooth hydrangea?
It’s best to water the Smooth hydrangea deeply two to three times a week. And you should water it more often if you live in a hot climate. Its water needs are average, and it needs moist but well-drained soil.
A good rule of thumb is to get a feel of the soil. It might be the right time to water your plant if you notice that it’s about 2-4 inches dry.
Water it 1-2x a week if it’s planted outdoors. Know that it’s getting more moisture outside, watering less with the help of rainwater is ideal.
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How much water does my Smooth hydrangea need?
The amount of water needed can vary. There are a lot of factors to consider, such as the weather in the area, the amount of shade, and the species. The Smooth hydrangea you’ve just recently planted will need more water than the established ones. A can of water each week can be ample for Smooth hydrangea, especially if they are in the growing season and when they are grown in pots.
When outdoors, you need to measure the amount of rain they are receiving with the help of moisture meters. When the soil is dry, water them thoroughly with a sprinkler. It’s best to water less often but thoroughly with the Smooth hydrangea to ensure they are getting the adequate moisture they need.
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Why is watering my Smooth hydrangea important?
Regardless of the types of the plant that you’re growing, it’s important to know its watering needs so that they will grow well. Smooth hydrangea needs a lot of water and can quickly wilt without the right moisture.
They require moist soil but make sure that the ground is well-drained. Smooth hydrangea doesn’t want wet feet since they tend to get root rot. Overwatering can also lead to slow production of flowers and stunted growth, which can also be a problem seen with underwatering.
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How can I ensure that i'm watering my Smooth hydrangea adequately?
It's best to water the Smooth hydrangea in the early morning to prevent it from wilting. It may be unable to handle the heat and can show signs of wilting in the afternoon. Make sure to apply a thick layer of mulch to keep the soil cool and retain moisture.
Once it feels the coolness of the evening, it will go back to its usual glow. Always water deeply and be consistent with the moisture. However, remember that it’s better to experience a slight wilting in the afternoon than to over-water them.
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Should I adjust the frequency of watering my Smooth hydrangea according to different seasons or climate?
When watering during the summer, it’s important to take the environment into consideration. These plants enjoy the early morning sun but not much of the midday glare since they can dry out too quickly.
It’s best to start planting these species in spring or autumn. Provide ample water, especially when you notice that the soil is dry during the summer. Don’t water the plants during the winter as they will enter a period of dormancy.
Fill the pot up to the rim, let the water soak, and run out of the drainage hole. Always water when the soil feels dry and if you have windy and hot weather. The plant supports a lot of big blooms, and they need ample water to maintain them.
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Should I change the watering frequency during different growing stages of my Smooth hydrangea?
During the growing season, it’s best to water this at a rate of 1 inch when it’s just growing. This should be done 3x per week. When growing in pots, you need to have one with a diameter of at least 18 inches. A non-porous one can help hold consistent levels of moisture.
An established plant does not need watering as much as one in the early phase of growth. They can be watered twice a week but always check the soil to be sure. Just make sure that there will be no waterlogging that occurs.
The plants might experience transplant shock when they are just newly planted. Just water until the depth of the moisture reaches out to 10 inches beneath the surface. Help the roots become more established during the dry, hot weather by checking the soil frequently.
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What should I be careful with when I water my Smooth hydrangea in different seasons, climates, or during different growing periods?
Overall, the Smooth hydrangea loves water and should be provided with enough to keep it hydrated.
Be careful not to overwater and never use cold water with them during the winter. They enter a dormancy period and they barely need water to survive.
In the spring, planting should be done where they will be given enough time to grow. Water more when they are young and make sure to give them enough mulch to keep the soil moist.
During the summer, just make sure that the soil is moist. Overwatering can result in a lack of blooms, but a heavy soaking can be done once a day whenever the soil needs this. For 3x a week, ensure water in the early mornings or afternoons.
The ones on the balcony or gardens should be watered generously during the summer months. This is because the water can evaporate quickly.
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Should I water Smooth hydrangea differently when I plant it indoors but not outdoors?
The Smooth hydrangea that is grown outdoors doesn’t generally need a lot of water compared to the one grown indoors. This species absorbs the water quickly, so watering can be done twice a week. When you grow Smooth hydrangea in partial shades, you generally encourage moisture retention and prevent the drying winds from wilting them. It’s best to keep the water away from the flowers as this can lead to gray mold.
The Smooth hydrangeaed indoors can be watered at least 2x a week or more when they are just in the growing phase to help the roots become more established.
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Cultivation:FertilizerDetail

How to Fertilize Smooth hydrangea?

Bigleaf hydrangea needs to be fertilized with a small amount of compound fertilizer a few times from spring to early summer every year. Panicle hydrangea only needs to be fertilized once a year, and the best time for fertilization is in spring. Oakleaf hydrangea is best fertilized twice from spring to early summer every two months. Smooth hydrangea only needs to be fertilized once before the end of winter.
Iron deficiency is prevalent in smooth hydrangea and causes the plant to grow significantly more slowly. The spaces between the veins of young leaves at the tips of branches begin to lose their green color. Gradually, the leaf turns yellow from the tip to the base. Once an iron deficiency is discovered, adjust the soil with an acidic fertilizer or something similar to make it slightly acidic. This will increase the iron absorption capacity of plant roots. Alternately, complex iron may be supplemented by foliar spraying or root burying to improve the conditions.

Fertilizer

Its profusion of large, showy flowerheads makes Smooth hydrangea a favorite with gardeners. Whether it’s growing in a container or as a flowering garden shrub/tree, it’s impossible to miss Smooth hydrangea when it’s blooming in the summer. However, it also requires the right fertilizer at the correct time to support the large blooms and encourage healthy growth.
You need to fertilize a Smooth hydrangea for a few important reasons. The most obvious of these reasons is that fertilizer will help your Smooth hydrangea produce lovely blooms. Fertilizing in early spring is one of the best ways to ensure that your Smooth hydrangea has excellent flowers during that season. Fertilizer also gives your Smooth hydrangea plenty of energy that it can store in the ground during its dormant growth phases. Giving your Smooth hydrangea some extra nutrients during the fall planting process or during the late spring will help your Smooth hydrangea hold more energy to use once active growth resumes.
Timing is crucial when it comes to fertilizing Smooth hydrangea. If you use fertilizer too early while the Smooth hydrangea is still dormant at this time. This fertilizer cannot be used effectively and will be washed away by rainwater, causing waste and pollution. The first application of fertilizer should be applied in the early spring. Continue fertilizing once a month until early summer.
The ideal fertilizer for a Smooth hydrangea is one that has a relatively balanced mix of the three main plant nutrients, with slightly higher amounts of phosphorus. Alternatively, some gardeners choose to improve their Smooth hydrangea 's soil by adding organic materials such as compost, worm castings, and manure. Some experienced gardeners will supplement 1-2 times with water-soluble fertilizers containing phosphorus when the flower buds start to appear. This will help the flowers develop better and allow them to grow larger and bloom longer. Fertilizers can come in many forms, and most of these forms will work well for your Smooth hydrangea. However, some of the best fertilizers for Smooth hydrangea come in either a liquid or a powdered form. Regardless of which you use, you should ensure that you dilute your fertilizer and apply it while watering your Smooth hydrangea.
Always follow directions for the specific type of fertilizer and do research on how to use it for the Smooth hydrangea you are growing. It is important not to over-fertilize your Smooth hydrangea, so determining the correct amount to use is crucial. The usual rule of thumb is to use the age of the tree (if known) or the diameter of the trunk to understand how much fertilizer should be used. Estimate a one-tenth of a pound of fertilizer per year or per inch of trunk, with a maximum of one pound. Granular fertilizers and organic fertilizers such as blood meal are applied by sprinkling the substance around the base of the tree all the way to the drip line (the space below the farthest-reaching branches) but do not let fertilizer come in contact with the trunk. Over time, the granules break down and filter into the soil to be absorbed into the roots. After fertilizing, spread an inch-deep layer of compost around the base of the tree and water thoroughly.
It is far better to under-fertilize than over-fertilize, since you can always add more but you cannot easily take away excess fertilizer. Over-fertilizing your Smooth hydrangea may cause brown leaf tips and edges, yellowing, wilting leaves, and possibly a visible crust of fertilizer salts on the surface of the soil around the tree. This condition is called fertilizer burn and results from too many accumulated salts in the plant’s cells. If excess nitrogen is the issue, the Smooth hydrangea will produce a lot of leaves but won’t grow much flowers since nitrogen supports foliage growth. If you have overfertilized, you could try removing the top layer of soil under the Smooth hydrangea to remove the most concentrated area of fertilizer. Then flush the area by watering heavily to try to get rid of fertilizer around the roots.
Avoid giving Smooth hydrangea a fertilizer with too much nitrogen, since this can lead to development of plenty of leaves but not many blooms. Look for fertilizer with a lower level of nitrogen compared to other nutrients. Do not fertilize after the early autumn, which can cause too much growth just before winter. Also, Smooth hydrangea should not be fertilized during hot and dry times of year, since dry soil does not deliver fertilizer as effectively as moist soil. Fertilizing at this time can also stimulate growth which in turn needs more water that may not be available. It is best to keep fertilizer for earlier in the season when temperatures are cooler. Finally, remember that Smooth hydrangea can absorb fertilizer that has been applied to nearby plants or lawns, so be cautious about inadvertently giving tree/shurb a double-dose of fertilizer.
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Cultivation:FertilizerDetail
Why do I need to fertilize my Smooth hydrangea?
You need to fertilize a Smooth hydrangea for a few important reasons. The most obvious of these reasons is that fertilizer will help your Smooth hydrangea produce lovely blooms. Fertilizing in early spring is one of the best ways to ensure that your Smooth hydrangea has excellent flowers during that season.
Fertilizer also gives your Smooth hydrangea plenty of energy that it can store in the ground during its dormant growth phases. Giving your Smooth hydrangea some extra nutrients during the fall planting process or during the late spring will help your Smooth hydrangea hold more energy to use once active growth resumes.
Read More more
When is the best time to fertilize my Smooth hydrangea?
Timing is crucial when it comes to fertilizing Smooth hydrangea. If you use fertilizer too early while the Smooth hydrangea is still dormant at this time. This fertilizer cannot be used effectively and will be washed away by rainwater, causing waste and pollution. The first application of fertilizer should be applied in the early spring. Continue fertilizing once a month until early summer.
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When should I avoid fertilizing my Smooth hydrangea?
Avoid giving Smooth hydrangea a fertilizer with too much nitrogen, since this can lead to development of plenty of leaves but not many blooms. Look for fertilizer with a lower level of nitrogen compared to other nutrients.
Do not fertilize after the early autumn, which can cause too much growth just before winter. Also, Smooth hydrangea should not be fertilized during hot and dry times of year, since dry soil does not deliver fertilizer as effectively as moist soil. Fertilizing at this time can also stimulate growth which in turn needs more water that may not be available. It is best to keep fertilizer for earlier in the season when temperatures are cooler.
Finally, remember that Smooth hydrangea can absorb fertilizer that has been applied to nearby plants or lawns, so be cautious about inadvertently giving tree/shurb a double-dose of fertilizer.
Read More more
What type of fertilizer does my Smooth hydrangea need?
The ideal fertilizer for a Smooth hydrangea is one that has a relatively balanced mix of the three main plant nutrients, with slightly higher amounts of phosphorus. Alternatively, some gardeners choose to improve their Smooth hydrangea 's soil by adding organic materials such as compost, worm castings, and manure. Some experienced gardeners will supplement 1-2 times with water-soluble fertilizers containing phosphorus when the flower buds start to appear. This will help the flowers develop better and allow them to grow larger and bloom longer.
Fertilizers can come in many forms, and most of these forms will work well for your Smooth hydrangea. However, some of the best fertilizers for Smooth hydrangea come in either a liquid or a powdered form. Regardless of which you use, you should ensure that you dilute your fertilizer and apply it while watering your Smooth hydrangea.
Read More more
How do I fertilize my Smooth hydrangea?
Always follow directions for the specific type of fertilizer and do research on how to use it for the Smooth hydrangea you are growing. It is important not to over-fertilize your Smooth hydrangea, so determining the correct amount to use is crucial. The usual rule of thumb is to use the age of the tree (if known) or the diameter of the trunk to understand how much fertilizer should be used. Estimate a one-tenth of a pound of fertilizer per year or per inch of trunk, with a maximum of one pound.
Granular fertilizers and organic fertilizers such as blood meal are applied by sprinkling the substance around the base of the tree all the way to the drip line (the space below the farthest-reaching branches) but do not let fertilizer come in contact with the trunk. Over time, the granules break down and filter into the soil to be absorbed into the roots. After fertilizing, spread an inch-deep layer of compost around the base of the tree and water thoroughly.
Read More more
What happens if I fertilize my Smooth hydrangea too much?
It is far better to under-fertilize than over-fertilize, since you can always add more but you cannot easily take away excess fertilizer. Over-fertilizing your Smooth hydrangea may cause brown leaf tips and edges, yellowing, wilting leaves, and possibly a visible crust of fertilizer salts on the surface of the soil around the tree. This condition is called fertilizer burn and results from too many accumulated salts in the plant’s cells. If excess nitrogen is the issue, the Smooth hydrangea will produce a lot of leaves but won’t grow much flowers since nitrogen supports foliage growth.
If you have overfertilized, you could try removing the top layer of soil under the Smooth hydrangea to remove the most concentrated area of fertilizer. Then flush the area by watering heavily to try to get rid of fertilizer around the roots.
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Cultivation:SunlightDetail

What Are the Sunlight Requirements for Smooth hydrangea?

The native environment of smooth hydrangea is under sparse forest, so it is adaptable to partial shade. Too little sunlight will reduce the flower number or even produce no flowers, and too much sunlight may cause sunburn to flowers. In gardens, the best place to plant smooth hydrangea is a place where it can fully receive the morning sunlight while being partially shaded in the afternoon. The colder the climate, the longer sunlight exposure is needed. In the coldest hardiness zone, it requires at least 6 hours of sunlight a day. In the warm areas where it is best adapted, 3 hours of sunlight a day is enough.
Cultivation:SunlightDetail
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How many hours of sunlight does Smooth hydrangea need to grow?
Smooth hydrangea requires about 3-6 hours of direct sunlight each day to thrive. However, it also needs some shade during the hottest parts of the day to prevent sun damage. Morning sunlight is ideal for Smooth hydrangea, but it can also tolerate some afternoon sun if the temperature is not too hot. To provide the perfect balance of sunlight, try planting Smooth hydrangea in an area that gets partial sun, such as under a tree or on the east side of a building.
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What will happen if Smooth hydrangea doesn’t get enough sunlight?
If Smooth hydrangea is exposed to too much direct sunlight, its leaves may turn yellow, dry out, or even burn. You may also notice that the plant wilts or becomes stunted. To prevent sun damage, make sure to give Smooth hydrangea some shade during the hottest parts of the day. You can use a shade cloth or plant Smooth hydrangea near taller plants that can provide some natural shade.
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What will happen if Smooth hydrangea gets too much sunlight?
If Smooth hydrangea doesn't get enough sunlight, it may grow tall and lanky, with sparse foliage. The leaves may also turn yellow or pale green, indicating that the plant is not producing enough chlorophyll due to lack of sunlight. To remedy this, try moving Smooth hydrangea to a sunnier spot, or prune nearby foliage to allow more light to reach the plant.
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Cultivation:PruningDetail

How to Prune Smooth hydrangea?

Hydrangeas pruning methods can be divided into two types, based on their different blossoming modes:
The first pruning method is suitable for bigleaf hydrangea (excluding 'Endless Summer', a variety that blooms on both old and new branches) and oakleaf hydrangea. These two hydrangeas bloom on old branches and have relatively strict requirements on pruning time, usually only in early summer, and no later than late summer. In late spring, they are blooming or going to bloom, and flower buds start to form or develop from late summer to the following spring. Daily pruning is required to cut off withered flowers and dead, weak, and inward-growing branches.
These hydrangeas have a distinctive feature: new branches will form on two buds adjacent to a cut. Buds that are lower then become almost undeveloped or grow poorly due to the lack of apical dominance. Therefore, pay attention to whether there are buds under the cut, as well as the height of branches and directions of buds. They have opposite branches, so the directions of reserved buds should be decided by the specific shape of the plant. Additionally, when plants are too large, they can be pruned heavily in summer. The part above the ground should be kept at about 15 cm high. This way, there will be a new, small plant at the end of the year, and it will not affect blooming next year.
The new branches of 'Endless Summer' bigleaf hydrangeas will bloom. Therefore, there are no strict requirements on pruning time; just avoid pruning in spring when buds are formed. Pruning during the rest of the year does not affect flowering, and plants are usually pruned in winter after the leaves fall.
The second pruning method is suitable for smooth hydrangea and panicle hydrangea. These two hydrangeas bloom on new branches grown that year, so there is a large window for pruning. Blooming will not be affected by pruning in all seasons except during spring budding. The only existing smooth hydrangea is the Annabelle series. After its leaves fall in winter, the parts of Annabelle above the ground can be completely cut off. However, this results in one disadvantage: the flowerhead of smooth hydrangea is very large and attaches to the annual branch, which is top-heavy, so support is required. Therefore, several main branches and primary side branches should be specially trained during pruning to prevent lodging during blooming.
Cultivation:PruningDetail
Is pruning necessary for my Smooth hydrangea?
Pruning is as important for the Smooth hydrangea as it is for any other ornamental plant species that you may choose to grow in your garden. If you prune this plant properly, you can enhance its overall health while preserving its most showy ornamental features. With that said, you cannot expect to reap those benefits if you don’t know when and how to prune this species. In fact, pruning too early in the spring or too late in the summer can cause you to remove the blooms for the current growing season or the next growing season, detracting significantly from the beauty of Smooth hydrangea.
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When is the best time to prune my Smooth hydrangea?
The most important fact to understand when it comes to Smooth hydrangea pruning is that these plants set their flower buds on old wood. Since the buds are on old wood, that means that pruning too early in the spring can cause you to remove the buds before they have a chance to bloom. What you should do instead is wait until the late spring or early summer to prune. The ideal time for pruning takes place at the end or just after this plant’s bloom period. Also, you should avoid pruning late in summer and into fall, as this is the time of year when the plant will set its buds for the next year.
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How can I prune my Smooth hydrangea?
To prune the Smooth hydrangea, you should start by cutting out any part of the plant that is dead or shows signs of damage or disease. Generally, the main goal of pruning this plant is to promote its health and maintain its overall shape, rather than pruning to promote more vigorous new growth. You may also perform the style of pruning known as deadheading during the bloom time, which involves removing any spent flower clusters. However, many gardeners choose not to deadhead this plant as the flowers can persist for a while, even into winter. With that said, the main structural pruning that you perform should occur just after the bloom period. The Smooth hydrangea is a plant that blooms from old wood, which means that pruning in early spring will cause you to remove the current season's flower buds. However, the Smooth hydrangea also sets its buds for the next season in late summer, which means that taking too long to prune can remove the next, year's buds. Any shaping and or significant removal of branches and stems should happen in late spring or early summer. During that time, removing crossing branches and thinning the canopy are also worthy pruning tasks if they are needed. Regardless of your pruning objectives, you should always choose a clean, sterile pair of pruning shears and use them to make clean cuts.
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How can I prune my Smooth hydrangea during different seasons?
The seasonal period during which you should prune the Smooth hydrangea is relatively short. This timeframe occurs between late spring and early summer. Prior to late spring and summer, you can perform moderate pruning to remove any stems, leaves or branches that show discoloration or other signs of disease. In that case, removing a few flower buds is worth it to rid the plant of a diseased limb. When the bloom time arrives in spring, you should watch for spent flower clusters, and consider deadheading them to promote more blooms. After the bloom period ends is when most of your trimming and shaping should occur. Pruning in late summer is a risky choice, as this can remove the next year’s blooms. The same threat is present when pruning during the fall, winter, and early spring. As such, the only advisable time to prune this plant significantly is during and after its bloom time.
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How can I prune my Smooth hydrangea through different growth stages?
The way you prune the Smooth hydrangea does not change much depending on the plant’s growth stages. In fact, nearly all pruning for this plant should take place in and around the bloom time. During the bloom stage, you perform light thinning and deadheading. Just after the bloom period, you should perform most of your major pruning. However, although pruning this shrub, as we have described, is beneficial to its well being, the Smooth hydrangea is a plant species that can survive well without any pruning at all, regardless of its age and growth stage. Also, it is alright to prune your Smooth hydrangea at any time during the growing season, if your pruning is minimal and focuses on removing individual leaves or branches that are yellowing or otherwise show signs of disease.
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Are there any tips and tricks for pruning my Smooth hydrangea?
The Smooth hydrangea is a plant that does not need too much pruning and also should not receive too much pruning. Heavy pruning can be difficult for this plant to recover from. To avoid this issue, you should never remove more than one-third of this plant’s overall mass during a single pruning. Often, you should not even come close to removing that much wood. Also, any time you perform pruning to this degree, or any other type of major trimming or shaping, it should take place just after the bloom period. Some years, you may have the chance to go without pruning this species at all if it has maintained a favorable shape and size, and that is alright. A season or a few without pruning won’t be detrimental to the health of Smooth hydrangea.
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Advanced Care Guide

Cultivation:WaterAndHardinessDetail

What is the Ideal Temperature Range for Smooth hydrangea?

Smooth hydrangea likes cool and moist environments with relatively small seasonal and day-night temperature differences. The best temperature for it is 18 to 29 ℃ and winter temperatures should not be lower than -1 ℃. The differentiation of flower buds requires temperatures of 4 to 7 ℃ for 6-8 weeks. Blooming can be promoted under 19 ℃. The flowers fade faster under high temperatures above 30 ℃. Smooth hydrangea has relatively strict requirements for soil, which should be moist, permeable, and free of accumulated water.
Cultivation:WaterAndHardinessDetail
What is the optimal temperature for Smooth hydrangea?
The best temperature for Smooth hydrangea to thrive is 65~80℉(18~27℃). During the primary growing phase, the highest temperature tolerable would be 95℉(35℃), while the lowest tolerable temperature would be 15℉(-10℃). This species is tolerant of low temperatures and will survive freezing winters. The perfect, highest, and lowest temperature range:
Perfect:65~80℉(18~27℃)
Highest:85~95℉(30~35℃)
Lowest:-5~15℉(-20~-10℃) or below
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Should I adjust the temperature for Smooth hydrangea during different growing phases?
Research shows that Smooth hydrangea will begin to exhibit signs of stunted growth during prolonged periods of higher temperatures, especially during the development of axillary buds and the growth of main shoots. Keeping the temperatures consistent and cooler, around 65℉(18℃), will encourage vigorous growth after germination or transplanting.
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How can I keep Smooth hydrangea warm in cold seasons?
Smooth hydrangea can withstand freezing temperatures when planted in the ground in areas that don’t get below of 15℉(-10℃) as an extreme temperature during the winter months. But if planted in pots or containers, then their roots must be protected from the winter cold. Do this by wrapping the container in a blanket or bringing it inside where it will be fully protected from the elements.
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What damage will Smooth hydrangea suffer if the temperature is too high/low?
Greater harm will come to Smooth hydrangea if the temperature is consistently too high versus too low.
If Smooth hydrangea gets too hot, seed germination and photosynthesis efficiency is lessened due to hormone triggers caused by heat stress. The plant will show signs through wilting, leaf browning, and potentially death.
If Smooth hydrangea gets too cold, plant functions such as nutrient uptake and photosynthesis will cease, resulting in the possible death of the plant. If a single freezing event occurs during the growing season, then a membrane phase transition might occur, which can cause a cease in plant functions and death of the plant.
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What tips and cautions should I keep in mind when it comes to temperature for Smooth hydrangea?
Keeping the soil temperature consistent is one of the most important strategies to keeping Smooth hydrangea healthy, which leads to successful budding, flowering, and new growth. Do this by consistently watering, adding mulch to bare soil, and planting in the shade.
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How can I keep Smooth hydrangea warm without a heat pad?
Due to the cold tolerance of Smooth hydrangea, heating pads will not be necessary if planted outside in the ground. If the plant is in an outdoor pot, then bring it inside a heated house and place it in a sunny window during the winter months.
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How can I provide Smooth hydrangea with an adequate temperature condition?
To ensure adequate temperature conditions are present, plant Smooth hydrangea in an area with partial shade. If possible, use afternoon shade to provide the best protection during the hottest part of the day. This will also result in lower temperatures in the soil due to increased moisture retention. If Smooth hydrangea is planted indoors, then keep the container away from windows and out of direct sunlight during the summer months to prevent the soil temperature from spiking daily.
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How can I save Smooth hydrangea from temperature damage?
During the summer or times of high heat, give Smooth hydrangea extra shade and water to help cool its leaves, roots, and soil. During cold snaps or growing season freezes, cover sensitive budding vegetation with frost cloth or water using sprinkler systems. If it’s only nearing freezing temperatures for a short period, then water during the day several hours before the freeze. If the temperature is predicted to remain below freezing for an extended period, then keep the sprinkler running until the temperature rises above freezing the following day.
Read More more
Should I adjust the temperature for Smooth hydrangea in different seasons?
Smooth hydrangea is a mid-temperature plant that can easily tolerate the typical fluctuations of the seasons and remain a hardy species when planted in maintained landscapes areas, containers, or indoors. Therefore, adjusting the temperature during the different seasons is unnecessary for primary growth. If flowering is stunted or impeded, then allowing the plant to experience a season of winter freeze could help to revive flowering.
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Under what conditions should I stop adjusting the temperature for Smooth hydrangea?
If it becomes too difficult to lower the temperature for an indoor plant during the summer, then plant it outside in the ground or in a container. Make sure to plant Smooth hydrangea in a shaded location and water often to keep the soil moist.
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Cultivation:SoilDetail

What Soil is Best for Smooth hydrangea?

Smooth hydrangea requires soil that is rich in humus and well-drained. It likes moist soil but is not resistant to waterlogging. If the soil is heavy, coarse sand or organic fertilizer can be added to improve draining and permeability. This can also increase the organic matter content. If the soil easily dries out, cover it with organic mulch to keep it moist while maintaining ventilation.
The soil pH will affect flower colors of some varieties of bigleaf hydrangea. Smooth hydrangea growing in acidic and aluminum-rich soils will bloom in blue, while in alkaline soils they bloom in pink. An appropriate amount of aluminum sulfate or lime can be added to the soil to adjust the pH if you want to control the flower color.
Cultivation:SoilDetail
Cultivation:PlantingDetail

How to Plant Smooth hydrangea?

The ideal planting time for smooth hydrangea is early spring or late autumn. A very high survival rate can be obtained by transplanting smooth hydrangea after it has gone completely dormant. Additionally, it can also be planted in late spring and early summer, but make sure the soil is always moist and well-draining. During the initial stage of transplanting, pay attention to shading. Proper shading will reduce the evaporation rate and prevent sunburn.
For transplanting, dig a pit 61 cm wider than the diameter of, and as deep as, the plant's root ball. Cover the pit with soil and pile up a small soil mound aboveground to help with water drainage. If planting in a flowerpot, make sure the diameter of the pot is at least twice as big as the root ball.
Cultivation:PlantingDetail
Cultivation:HarvestDetail

How to Harvest Smooth hydrangea?

Smooth hydrangea inflorescences can be divided into two categories according to their shapes: Lacecap and Mophead. Both can be used as cut flowers. The inflorescences can be cut with sharp scissors as soon as they fully bloom. The best time to pick flowers is early morning, which helps avoid the effects of evaporation. The stem should be cut at a 45-degree angle and soaked in cool water as soon as possible to prevent moisture loss.
Cultivation:HarvestDetail
PlantCare:TransplantSummary

How to Transplant Smooth hydrangea?

For smooth hydrangea, the best time to transplant is during the temperate months between mid-spring and early summer. Choose a location with partial to full sunlight and well-drained soil. Remember to water thoroughly after transplanting to establish strong roots.
PlantCare:TransplantSummary
Cultivation:PottingSuggestions

How to Repot Smooth hydrangea?

Needs excellent drainage in pots.
Cultivation:PottingSuggestions
care_scenes

More Info on Smooth Hydrangea Growth and Care

Basic Care Guide
Common Pests & Diseases
Explore More
Water
Every 1-2 weeks
Smooth hydrangea comes from woodland and open areas in North America, including the eastern United States and Canada. It prefers well-drained soil and moderate to high levels of moisture. This plant's native habitat indicates its need for regular watering, as it is accustomed to receiving sufficient rainfall. To meet its watering needs, it is essential to keep the soil consistently moist without allowing it to become waterlogged.
Watering Techniques
Lighting
Partial sun
Smooth hydrangea enjoys an environment where it receives moderate amounts of sun throughout the day. It has a degree of flexibility, able to withstand areas with more intense sunlight as well as locales with less light exposure. However, extremely sheltered or overly exposed conditions could hinder its growth, affecting its leaves and flowering process.
Best Sunlight Practices
Temperature
-30 - 38 ℃
The smooth hydrangea grows natively in areas with a temperate climate, and it prefers temperatures between 32 to 95 ℉ (0 to 35 ℃). In order to adjust to temperature changes in different seasons, it is recommended to plant the smooth hydrangea in a sheltered location during winter months and to provide mulch to keep the root system insulated.
Temp for Healthy Growth
Transplant
3-10 feet
For smooth hydrangea, the best time to transplant is during the temperate months between mid-spring and early summer. Choose a location with partial to full sunlight and well-drained soil. Remember to water thoroughly after transplanting to establish strong roots.
Transplant Techniques
Caterpillars
Caterpillars, or defoliatory larval stage of moths and butterflies, can infest and negatively affect the health of Smooth hydrangea. They chew on the leaves, leading to stunted growth, and can sometimes result in plant death.
Learn More About the Disease
Brown blotch
Brown spot is a common fungal disease affecting diverse plant species, including the Smooth hydrangea. The disease manifests as brown spots on the leaves, weakening the plant's vigor and aesthetic appeal while potentially diminishing overall health if left untreated.
Learn More About the Disease
Leaf rot
Leaf rot is a widespread disease affecting Smooth hydrangea, leading to severe foliage decay and stunted growth. This disease is caused by several fungal agents, often accelerated by high humidity and improper care. With an effective management plan, its impact can be minimized.
Learn More About the Disease
Wilting
Wilting is a deadly plant disease affecting Smooth hydrangea and inhibiting nutrient and water transport. The collapse of plant cells leads to the drooping of leaves and eventual plant death. Timely intervention through proper plant care and treatment can save afflicted plants.
Learn More About the Disease
Feng shui direction
North
Smooth hydrangea is considered harmonious in Feng Shui due to its rounded shape and lush, vibrant blooms. When placed in the North-facing direction, it is believed to enhance career success and personal growth, given its association with the water element in the Bagua map.
Fengshui Details
care_seasonal_tips

Seasonal Care Tips

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Spring

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Summer

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Fall

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Winter

This plant requires some care in the spring to encourage blooming.

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1
Cut off old flower heads, but only if the plant isn’t producing buds. If so, wait to prune until next spring.
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2
After pruning, give the plant an application of a balanced fertilizer, and reapply right before the buds begin opening.
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3
Water the plant thoroughly after fertilizing and keep the soil consistently moist throughout the growing season.
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4
The plant is occasionally grown in containers. Spring is the best time to move the plant to a larger pot. When roots begin appearing above the soil line or growing out of drainage holes, it’s time to repot it.

The plant is a thirsty plant in the summer.

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1
Watering frequency is one of the most common problems gardeners experience. If the leaves begin drooping, water the soil deeply but avoid getting moisture on the leaves. Mulching will help reduce watering frequency.
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2
Remove any spent blooms, but do not prune back the woody stems.
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3
Continue fertilizing the plant to encourage leaf growth.
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4
The plant requires some protection from the summer sun. Move container plants to a partially shady area.
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5
You can propagate the plant by taking cuttings from hardened wood. Avoid clipping green growth for use as cuttings.

During the autumn, you may begin to prepare your plant for dormancy in the winter.

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1
Make sure the plant receives shade and is exposed to lower temperatures before the cold sets in
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2
New wood varieties of the plant that bloom in the autumn can be lightly pruned back in the late fall, so after the flowering season deadhead spent blooms and trim away any weak parts of the plant. Don't prune old wood varieties.
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3
You may also propagate new plants at this time.
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4
Give your plant a few deep waterings throughout the fall so it can stay hydrated in the winter.

This plant typically go dormant during the cold winter months.

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1
During late fall or early winter, before the cold really sets in, add cold protection to your plant in the form of several inches of mulch.
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2
Apply less mulch in temperate climates and more mulch in freezing climates. If possible, you can move your potted plants indoors to shelter them from the freezing weather and frost that they’ll be exposed to outside.
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3
Don't do any extra pruning during this season, which can damage rather than help this dormant plant.
care_pet_and_diseases

Common Pests & Diseases

Common issues for Smooth hydrangea based on 10 million real cases
Caterpillars
Caterpillars
Caterpillars, or defoliatory larval stage of moths and butterflies, can infest and negatively affect the health of Smooth hydrangea. They chew on the leaves, leading to stunted growth, and can sometimes result in plant death.
Brown blotch
Brown blotch
Brown blotch
Brown spot is a common fungal disease affecting diverse plant species, including the Smooth hydrangea. The disease manifests as brown spots on the leaves, weakening the plant's vigor and aesthetic appeal while potentially diminishing overall health if left untreated.
Leaf rot
Leaf rot
Leaf rot is a widespread disease affecting Smooth hydrangea, leading to severe foliage decay and stunted growth. This disease is caused by several fungal agents, often accelerated by high humidity and improper care. With an effective management plan, its impact can be minimized.
Wilting
Wilting
Wilting is a deadly plant disease affecting Smooth hydrangea and inhibiting nutrient and water transport. The collapse of plant cells leads to the drooping of leaves and eventual plant death. Timely intervention through proper plant care and treatment can save afflicted plants.
Wilting after blooming
Wilting after blooming Wilting after blooming
Wilting after blooming
Flowers may wither for a variety of reasons.
Solutions: Check the soil or potting medium. Coarse textures can allow water to drain too rapidly, preventing the plant from taking up enough. If the soil and roots seem very dry, add sphagnum moss or other mediums that hold water. Water according to recommendations for each plant's species. Low humidity can be corrected by misting the plant regularly or placing it near a humidifier. Keeping it near other plants helps, too. Keep the environment consistent in terms of temperature, humidity, and lighting. Keep it away from vents, heaters, and air conditioners, and avoid moving it to locations where it will experience a temperature shock. Hot, dry heat, and cold drafts are problematic for many plants. Especially if the plant is outside, it could be experiencing heat or light stress. Try moving it to a shadier location.
Leaf beetles
Leaf beetles Leaf beetles
Leaf beetles
Leaf beetles are a class of colored insects 1 to 2 cm in size. They gnaw on leaves and petals resulting in small, round holes scattered over the surface.
Solutions: For less serious cases: Remove beetles, nymphs, and eggs. Remove all life stages of the beetles and kill them by placing them in a bucket of warm, soapy water. This can be done more easily by placing the bucket under affected leaves and shaking the plant. This method is most effective in the afternoon when leaf beetles are more active. Always dispose of insects in a sealed bag or container to avoid escape and spread. To treat more serious infestations: Apply organic insecticides. Use naturally-derived insecticides before moving on to synthetic insecticides. Neem oil and pyrethrum are naturally-derived insecticides that should be applied following label instructions. Apply synthetic insecticides. Examples of insecticides effective for leaf beetles include carbaryl, permethrin, and bifenthrin. Apply insecticides according to label instructions.
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Caterpillars
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Caterpillars Disease on Smooth hydrangea?
What is Caterpillars Disease on Smooth hydrangea?
Caterpillars, or defoliatory larval stage of moths and butterflies, can infest and negatively affect the health of Smooth hydrangea. They chew on the leaves, leading to stunted growth, and can sometimes result in plant death.
Symptom Analysis
Symptom Analysis
Smooth hydrangea plants affected by caterpillars display chewed leaves with visible holes or saw-toothed edges. Severely infested plants may be defoliated entirely. Yellowing, wilting, and slowed growth may also be observed.
What Causes Caterpillars Disease on Smooth hydrangea?
What Causes Caterpillars Disease on Smooth hydrangea?
1
Organism
The caterpillar is the larval stage of certain insects, particularly those belonging to the Lepidoptera order, which includes moths and butterflies.
2
Environmental conditions
They are more likely to appear during damp, warm climates, where their food plants are present.
How to Treat Caterpillars Disease on Smooth hydrangea?
How to Treat Caterpillars Disease on Smooth hydrangea?
1
Non pesticide
Handpicking: Regularly check Smooth hydrangea for caterpillars and pick them off by hand.

Natural predators: Encourage birds and other natural predators, such as wasps, as they help keep the caterpillar population under control.
2
Pesticide
Insecticidal soap: Use a mild solution of insecticidal soap, which is safe for plants and lethal to caterpillars.

Bacillus thuringiensis (Bt): A biological pesticide that specifically targets caterpillars.
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Brown blotch
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch Disease on Smooth hydrangea?
What is Brown blotch Disease on Smooth hydrangea?
Brown spot is a common fungal disease affecting diverse plant species, including the Smooth hydrangea. The disease manifests as brown spots on the leaves, weakening the plant's vigor and aesthetic appeal while potentially diminishing overall health if left untreated.
Symptom Analysis
Symptom Analysis
The Smooth hydrangea exhibits brown spots or lesions on leaves, usually surrounded by a yellow halo. These spots can merge, leading to largescale leaf damage. If severe, the leaves may yellow and fall off, impacting plant growth.
What Causes Brown blotch Disease on Smooth hydrangea?
What Causes Brown blotch Disease on Smooth hydrangea?
1
Fungus
The brown spot disease is primarily caused by several strains of fungi, including Bipolaris spp., Drechslera spp., and others.
2
Environmental conditions
Favorable conditions, such as high humidity and warmth, facilitate the disease's spread and development.
How to Treat Brown blotch Disease on Smooth hydrangea?
How to Treat Brown blotch Disease on Smooth hydrangea?
1
Non pesticide
Sanitation: Regularly remove and dispose of affected leaves to prevent spore spread.

Plant care: Maintain optimum growth conditions for the Smooth hydrangea, avoiding overcrowding and ensuring good air circulation.
2
Pesticide
Fungicides: Apply approved fungicides that target the brown spot's causing fungi.

Regular treatment: Repeat applications according to product instructions until the disease is under control.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Smooth hydrangea?
What is Leaf rot Disease on Smooth hydrangea?
Leaf rot is a widespread disease affecting Smooth hydrangea, leading to severe foliage decay and stunted growth. This disease is caused by several fungal agents, often accelerated by high humidity and improper care. With an effective management plan, its impact can be minimized.
Symptom Analysis
Symptom Analysis
Leaf rot initially manifests on Smooth hydrangea as yellowing and wilting of leaves. Over time, the affected leaves darken, decay and fall off. In advanced stages, stunted growth and branch dieback are commonly observed.
What Causes Leaf rot Disease on Smooth hydrangea?
What Causes Leaf rot Disease on Smooth hydrangea?
1
Fungi
Leaf rot in Smooth hydrangea is commonly attributed to a selection of fungi, including Phytophthora, Pythium and Rhizoctonia.
2
Environmental Conditions
High humidity, overwatering, and poor drainage also contribute to the proliferation of the disease.
How to Treat Leaf rot Disease on Smooth hydrangea?
How to Treat Leaf rot Disease on Smooth hydrangea?
1
Non pesticide
Pruning: Regularly prune affected leaves and branches to retard disease progression and improve air circulation.

Optimized Watering: Avoid overwatering and water at the base of the plant to minimize leaf wetness.
2
Pesticide
Fungicides: Application of approved fungicides can help control the disease, however, their use should be as per the labeled instructions.
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Wilting
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Wilting Disease on Smooth hydrangea?
What is Wilting Disease on Smooth hydrangea?
Wilting is a deadly plant disease affecting Smooth hydrangea and inhibiting nutrient and water transport. The collapse of plant cells leads to the drooping of leaves and eventual plant death. Timely intervention through proper plant care and treatment can save afflicted plants.
Symptom Analysis
Symptom Analysis
Symptoms in Smooth hydrangea include sudden wilting and yellowing of leaves, followed by browning and dying off. The initial wilt may appear to be reversible during cooler periods of the day; however, the plant does not recover and eventually dies.
What Causes Wilting Disease on Smooth hydrangea?
What Causes Wilting Disease on Smooth hydrangea?
1
Pathogen
Mainly caused by Fusarium oxysporum, a soil-borne fungus that disrupts water flow in the plant.
2
Soil conditions
Overly wet or dry soils that stress the plant, making it more susceptible to pests and diseases.
How to Treat Wilting Disease on Smooth hydrangea?
How to Treat Wilting Disease on Smooth hydrangea?
1
Non pesticide
Drainage improvement: Proper soil drainage to avoid overly wet conditions.

Plant care: Regular health checkups to detect early disease signs, providing an opportunity for early intervention.
2
Pesticide
Fungicides: Apply systemic fungicides to control the spread once detected.

Disease-resistant varieties: In severe cases, it may be beneficial to use disease-resistant varieties.
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Wilting after blooming
plant poor
Wilting after blooming
Flowers may wither for a variety of reasons.
Overview
Overview
Wilting after blooming is sometimes a natural aging process of the flower, while other times it may indicate a problem. Orchids, for example, can bloom for anywhere from two weeks to three months, so wilting after a few days signals a problem for most varieties. This can happen to virtually any ornamental flowering plant, but those with shallow roots and limited tolerance for drought, full sun, and low humidity are more susceptible.
This is a common problem, and often has an easy fix. Sometimes, however, it is the result of more serious causes such as pests or disease of the root system.
Symptom Analysis
Symptom Analysis
  • At first, flowers may look a little limp.
  • Petals may start to appear dried out and turn brown.
  • Eventually they may drop off the plant all together.
Disease Cause
Disease Cause
Wilting blooms can be a sign of an unhealthy root system. Any condition that prevents the plant from absorbing enough water and nutrition can result in wilting blooms and sometimes other symptoms. If the plant doesn’t have enough water, it cannot maintain appropriate pressure within stems, leaves, and blooms, causing them to wilt.
This can result from physical damage – for example from root breakage during re-potting or attack by insects like cutworms. If you recently re-potted your plant, physical damage to the roots is a likely cause. If you see insects, they may be eating leaves, roots, or flowers. Fungal infections can also cause root rot and damage, preventing water and nutrient uptake.
Finally, wilting blooms can result simply from age. If no other symptoms are visible, it may simply signal the natural end of the flower’s lifespan. If it seems premature, this may be caused by environmental factors: water, humidity, light, or stress. Under-watering is a common cause. Similarly, plants adapted to high humidity dry out easily when humidity is low, like during winter or in dry climates. Too much light can also stress plants that need shade, causing blooms to wilt.
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Leaf beetles
plant poor
Leaf beetles
Leaf beetles are a class of colored insects 1 to 2 cm in size. They gnaw on leaves and petals resulting in small, round holes scattered over the surface.
Overview
Overview
Leaf beetles range in size from 1.5 mm to 2 cm. Both adult beetles and their larvae eat the leaves of many different types of plants. There are over 35,000 different species of leaf beetles, in a variety of colors including gold, green, yellow-striped, and red striped. Some of these have been mistaken for ladybirds because of their shape and coloring. They can be oval, round, or elongated in shape. These insect pests are most active in spring and summer.
If not controlled, leaf beetles can do a lot of damage to vegetable crops and ornamental plants. They feed on the leaves, flowers, stems, roots, and fruits of different plants. They can fly, which means it's easy for them to move from one plant to another. Some species of leaf beetles only target one specific crop, while others will target many different types of plants. Although a lot of the damage that they cause is cosmetic, an infestation can weaken a plant and leave it prone to other more problematic diseases.
Symptom Analysis
Symptom Analysis
The first signs of a leaf beetles infestation are small visible holes in leaves. Leaves then become discolored and dark beetle droppings can be seen. As the leaves turn yellow and brown, they will drop off the plant onto the ground. Some leaves will appear skeletonized with only the veins still remaining.
Infestation begins in spring, when the adult beetles emerge from the soil and lay their eggs on the leaves of plants. When these eggs hatch, the young nymphs start munching on the leaves as they grow up. Once leaf beetles are large and mature, they'll fall to the ground and pupate in the soil over winter before starting the cycle all over again.
Leaf beetles also eat holes in fruits and vegetables. These can be seen as small round holes that sometimes have a larger brown area surrounding them.
Solutions
Solutions
For less serious cases:
  1. Remove beetles, nymphs, and eggs. Remove all life stages of the beetles and kill them by placing them in a bucket of warm, soapy water. This can be done more easily by placing the bucket under affected leaves and shaking the plant. This method is most effective in the afternoon when leaf beetles are more active. Always dispose of insects in a sealed bag or container to avoid escape and spread.
To treat more serious infestations:
  1. Apply organic insecticides. Use naturally-derived insecticides before moving on to synthetic insecticides. Neem oil and pyrethrum are naturally-derived insecticides that should be applied following label instructions.
  2. Apply synthetic insecticides. Examples of insecticides effective for leaf beetles include carbaryl, permethrin, and bifenthrin. Apply insecticides according to label instructions.
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care_toxicity

Smooth Hydrangea and Their Toxicity

Toxic to Dogs
Toxic to Dogs
Smooth hydrangeas are mildly poisonous to dogs. Their leaves, flowers, and buds all contain the toxic substance, with the highest concentrations being found in flowers and young leaves. Vomiting and diarrhea are the most common symptoms of smooth hydrangea ingestion. Thankfully, severe poisoning cases are rare - this toxin must be consumed in very large amounts to be fatal.
Toxic to Cats
Toxic to Cats
The smooth hydrangea (Hydrangea arborescens) is moderately poisonous to cats. The leaves and all parts of the flower contain the toxin. When eaten in sufficient amounts, they can cause nausea, diarrhea, vomiting, labored breathing, lethargy, and dermatitis. Small cats and kittens are at the highest risk of serious illness. Consult your veterinarian if your cat has eaten any part of this plant.
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Who Is Most at Risk of Plant Poisoning?
Your pets like cats and dogs can be poisoned by them as well!
1
Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
2
It’s better to kill those growing around your house. Wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages, and do not let your pets reach it;Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
7
If you take your pets to hike with you in the wild, please don’t let them eat any plants that you don’t know;
8
Once your pets eat, touch or inhale anything from toxic plants and act abnormally, please call the doctors for help ASAP!
pets
Pets
Some pets are less likely than children to eat and touch just about everything. This is good, as a pet owner. However, you know your pet best, and it is up to you to keep them safe. There are plenty of poisonous weeds that can grow within the confines of your lawn, which might make your dogs or cats ill or worse if they eat them. Try to have an idea of what toxic plants grow in your area and keep them under control and your pets away from them.
pets
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
tend2
If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

plants
The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
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Who Is Most at Risk of Plant Poisoning?
Everyone should keep the following in mind to prevent being poisoned:
1
Do not eat any parts, nor contact with the sap of toxic or unknown plants;
2
If you need to kill it, wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages;
7
Wear properly when you hiking or working in the wilderness. Long pants, long sleeves, gloves, hiking shoes, etc., that protect you from being hurt by any plants;
8
Once you or your family aren’t feeling well after eating, touching or inhaling anything from toxic plants, please call your doctor for help ASAP!
Outdoor Workers
Outdoor Workers and Recreationalists
Those who enjoy the outdoors either as a hobby or as part of their work will rarely see a plant and decide to munch on it (although the scenario is not unheard of). However, they do tend to deal with moving through and brushing aside plants. These people are more at risk of being poisoned by touching toxic plants than by ingesting them.
Outdoor Workers
Foragers
Foragers
Foraging for food and medicinal plants is a desirable skill among people who want to feel at one with the land. This hobby can be very useful and enjoyable, but if done wrong , it can lead to disastrous effects. People who forage are picking and grabbing plants with the full intention of using those plants, most of the time to ingest them.
Foragers
Children
Children
While outdoor workers are more likely to touch poison and foragers are more likely to ingest poison, children can easily do both. These bundles of joy just love to run around and explore the world. They enjoy touching things and occasionally shoving random stuff in their mouth; this is a terrible combination with toxic plants in the mix.
If you let your children run about, it is important to know what are the local toxic plants that they could accidentally get into. Try to educate the children and steer them away from where the toxic plants are located.
Children
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
tend2
If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

plants
The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
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More About Smooth Hydrangea

Plant Type
Plant Type
Shrub
Lifespan
Lifespan
Perennial
Spread
Spread
91 to 152 cm
Bloom Time
Bloom Time
Summer
Flower Color
Flower Color
White
Green
Cream
Pink
Leaf Color
Leaf Color
Green
Flower Size
Flower Size
0.6 to 1.1 mm
Plant Height
Plant Height
1 to 3 m

Name story

Smooth hydrangea
As compared to any common hydrangea, the flowers are denser in this plant. This makes the flower ball look full and smooth like a snowball, so it is called smooth hydrangea.
Sevenbark
The stem bark has a peculiar tendency to peel off in several successive thin layers with different colors, so the common name is called sevenbark.

Usages

Garden Use
Smooth hydrangea is a flowering shrub that is sometimes grown ornamentally for its unusually shaped green-white flowers. This plant spreads rapidly and is, therefore, a good choice of ground cover plant. It also makes for a great flowering hedge and looks great in mixed borders. Azaleas grow well with hydrangeas since they bloom early, offering garden color before smooth hydrangea flowers.
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Common Problems

Why are leaves withering?

more more
Smooth hydrangea typically displays leaf withering during hot summers. It likes being in the sun but cannot stand intense sunlight, especially in summer. Due to its large leaves, it loses water quickly. If the leaves are exposed to daylight after a significant water loss, it will wither. Before planting, it is best to select a location with filtered light and partial shade. Additionally, a loose, air-permeable, and well-draining medium should be used.

My smooth hydrangea did not bloom much in past years: only one flower last year. What can I do?

more more
First, make sure your plants were pruned in time; some varieties bloom on old branches, so the pruning window is very small. They can only be pruned in June and July after they fully bloom. After that, flower buds begin to grow for the next year, so they won't bloom if they are pruned in winter. If the plants were pruned properly, consider the sunlight at the planting location. Though smooth hydrangea is shade-tolerant, it needs sufficient sunlight to bloom. If the above causes are ruled out, you can apply some organic fertilizer or slow-release fertilizer under the soil surface during winter, and apply supplemental, water-soluble fertilizer containing phosphorus and potassium in spring and fall.

How do I change the color of smooth hydrangea flowers?

more more
Most flowers will change color naturally from white to pink and then lavender over time. In some varieties, such as 'Endless Summer', the flower color is influenced by the pH of the soil. The flowers turn blue when smooth hydrangea grows in acidic soil (pH<6), while the flowers are pink to red when it grows in alkaline soil (pH >7). The flowers are purple or blue-pink in slightly acidic or neutral soil (pH 6-7). Aluminum sulfate can be used to make the soil acidic, while lime may be used to make the soil alkaline.
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Caring for a New Plant

new-plant
The following pictures and instructions for flower plant are aimed to help your plants adapt and thrive in a new environment.
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1
Picking a Healthy Flower Plant
check-health

Check Its Health

part-image-bg part-image
Whole Plant
Symmetrical crown, evenly distributed branches, full and compact shape, no excessive growth, close internodes, and uniform leaf size.
part-image-bg part-image
Flowers
Many unopened flower buds are closely attached, without falling off easily when shaken, and show no diseased spots or wilting on the petals.
part-image-bg part-image
Branches
The branches are not withered, and the trunk is free of boreholes or damage.
part-image-bg part-image
Stems
No mold, browning or soft rot at the base of the plant.
part-image-bg part-image
Leaves
Check the inside of the plant, shaded and overlapping areas, back of leaves. Even colour, no yellowing, no brown spots, no crawling insects, no cobwebs, no deformities, no wilting.
health-trouble

Health Troubleshooting

Whole Plant
trouble-image
more 1 Asymmetrical crown or missing, uneven branching: prune the weak and slender branches of the larger portion of the asymmetrical crown, then trim the overgrown larger branches.
trouble-image
more 2 Internodes are longer in the upper part, leaves are sparse and smaller on top: increase light intensity or duration.
Branches
trouble-image
more 1 Dry branches: check if the branch is still alive by peeling back a small section of bark and trim away any dry branches. Watch out for signs of insect infestation inside the branch.
trouble-image
more 2 Bark with holes: inject insecticide into the holes and apply systemic insecticide to the roots.
trouble-image
more 3 Damaged bark: brush on a wound-healing agent, and avoid getting it wet.
Stems
trouble-image
Mildew, browning, or soft rot at the base: place the plant in a ventilated, dry environment and water with fungicide.
Flowers
trouble-image
more 1 Many flowers have already bloomed: lower the temperature in the environment to extend the flowering period. Prune any dying flowers in a timely manner to prevent nutrient depletion.
trouble-image
more 2 Flower bud dropping: keep temperature at 15-25℃, place in bright but shaded area, water frequently, and avoid fertilizing.
trouble-image
more 3 Flower petals have spots or disease: avoid spraying water directly onto the petals.
trouble-image
more 4 Flower wilting: avoid soil that is too wet or too dry. When touching the soil with your finger, it should feel moist but not leave any water traces on your finger.
Leaves
trouble-image
more 1 Uneven leaf color and yellowing: prune yellow leaves and check if there are signs of rot at the base of the plant. Spray with fungicide for severe cases.
trouble-image
more 2 Brown spots or small yellow spots: place the plant in a ventilated area and avoid watering the leaves. Spray with fungicide for severe cases.
trouble-image
more 3 Tiny crawling insects on the back of leaves or spider webs between leaves: increase light exposure and spray with insecticide for severe cases.
trouble-image
more 4 Deformations or missing parts on leaves: determine if it's physical damage or pest infestation. Linear or tearing damage is physical, while the rest are pests. Spray with insecticide.
trouble-image
more 5 Wilting leaves: provide partial shade and avoid excessive sun exposure. Remove 1/3 to 1/2 of the leaves for severe cases.
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Check Its Growing Conditions

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Soil Check
Soil should smell fresh like after a rain and no musty odor.
check
Light Check
Check the light requirement of the plant and if it match with planting location.
check
Ventilation Check
Ensure good ventilation.
check
Temperature Check
Ensure outdoor temperature is suitable for plants.
condition-trouble

Condition Troubleshooting

check
Soil
Potting mix soil, Peat moss mix soil
Soil smells musty or foul: check the root system for decay, place the plant in a ventilated, dry environment, and water with fungicide.
check
Ideal Temperature
-10℃ to 35℃
Temperature is too low: Temporarily move the plants indoors and then to outdoors when temperature is suitable.
check
Ventilation
Well Ventilated
Non-ventilated environment: can lead to root rot, diseases, and flower drop. Place the plants in an airy location avoiding dead spots.
check
Suitable Light
Partial sun, Full shade
Insufficient light: reduce light appropriately during flowering period but not a fully shaded environment. After flowering, move to normal cultivation environment. For plants with long flowering and fruiting periods, provide normal light to avoid shortening.
Transplant recovery: After transplanting, pot plants should be temporarily shaded, then moved to normal light after a week if no abnormal drop or wilting. In-ground plants, shade for a week and then transfer to normal light or just pay attention to watering.
more
2
Adapting Your New Flower Plant
Step 1
condition-image
Repotting
Potted plants - Wait until flowering stage is over before changing pots. In-ground plants - Plant directly taking care not to harm root system or remove soil.
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Step 2
condition-image
Pruning
Prune residual flowers, yellow/dead leaves. No other pruning at this time.
show more show-more
Step 3
condition-image
Watering
Water appropriately. Water more frequently for newly transplanted or purchased plants to keep the soil consistently moist for at least 2 weeks. Avoid overwatering, do not water when there is water on your finger after touching the soil. Both underwatering and overwatering can cause plants to drop their flowers or fruit.
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Step 4
condition-image
Fertilizing
Don't fertilize just after purchase. Fertilize after 2 weeks using half concentration.
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main-image
Smooth Hydrangea
label-image
Repotting
Repotting potted plants: Wait until flowering ends. Repotting in-ground plants: Be careful not to harm roots/soil.
label-image
Pruning
Prune residual flowers, and yellow/dead leaves. No other pruning at this time.
label-image
Watering
Water new plants more often for 2 weeks. Avoid over/under watering by checking the soil.
label-image
Fertilizing
Don't fertilize just after purchase. Fertilize after 2 weeks using half concentration.
label-image
Sunlight
Long flowering plants need normal light. Shade transplants for a week, then move to normal light.
label
main-image
Smooth Hydrangea
label-image
Repotting
Repotting potted plants: Wait until flowering ends. Repotting in-ground plants: Be careful not to harm roots/soil.
label-image
Pruning
Prune residual flowers, and yellow/dead leaves. No other pruning at this time.
label-image
Watering
Water new plants more often for 2 weeks. Avoid over/under watering by checking the soil.
label-image
Fertilizing
Don't fertilize just after purchase. Fertilize after 2 weeks using half concentration.
label-image
Sunlight
Long flowering plants need normal light. Shade transplants for a week, then move to normal light.
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Smooth hydrangea

How to Care for Smooth Hydrangea

Smooth hydrangea (*Hydrangea arborescens*) is a deciduous shrub, naturally found on streambanks, gorges, and wooden slopes in many parts of Northern America. It is commonly recognized by its showy inflorescences - big white corymbs which bloom during summer. Smooth hydrangea is often cultivated as an ornamental, and it is an excellent choice for a border plant.
symbolism

Symbolism

Thank you for understanding, Boastfulness, Heartlessness, Vanity, Beauty, Gratitude, Forgiveness
Water
Every 1-2 weeks
Water Water detail
Sunlight
Partial sun
Sunlight Sunlight detail
Toxic to Pets
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Basic Care Guide

Cultivation:WaterDetail

How to Water Smooth hydrangea?

Cultivation:WaterDetail
Smooth hydrangea demands a very large amount of water. The recommended watering frequency is at least three times a week. Please note that the frequency should be appropriately increased in dry areas or during hot summers. The soil should always be kept moist, but free of accumulated water. The watering frequency may be adjusted in different seasons according to this criterion. Furthermore, water should be quickly supplemented if smooth hydrangea leaves begin to wither.
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What’s the best method to water Smooth hydrangea?
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How much water does my Smooth hydrangea need?
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Cultivation:FertilizerDetail

How to Fertilize Smooth hydrangea?

Cultivation:FertilizerDetail
Bigleaf hydrangea needs to be fertilized with a small amount of compound fertilizer a few times from spring to early summer every year. Panicle hydrangea only needs to be fertilized once a year, and the best time for fertilization is in spring. Oakleaf hydrangea is best fertilized twice from spring to early summer every two months. Smooth hydrangea only needs to be fertilized once before the end of winter.
Iron deficiency is prevalent in smooth hydrangea and causes the plant to grow significantly more slowly. The spaces between the veins of young leaves at the tips of branches begin to lose their green color. Gradually, the leaf turns yellow from the tip to the base. Once an iron deficiency is discovered, adjust the soil with an acidic fertilizer or something similar to make it slightly acidic. This will increase the iron absorption capacity of plant roots. Alternately, complex iron may be supplemented by foliar spraying or root burying to improve the conditions.
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Fertilizer

Its profusion of large, showy flowerheads makes Smooth hydrangea a favorite with gardeners. Whether it’s growing in a container or as a flowering garden shrub/tree, it’s impossible to miss Smooth hydrangea when it’s blooming in the summer. However, it also requires the right fertilizer at the correct time to support the large blooms and encourage healthy growth.
You need to fertilize a Smooth hydrangea for a few important reasons. The most obvious of these reasons is that fertilizer will help your Smooth hydrangea produce lovely blooms. Fertilizing in early spring is one of the best ways to ensure that your Smooth hydrangea has excellent flowers during that season. Fertilizer also gives your Smooth hydrangea plenty of energy that it can store in the ground during its dormant growth phases. Giving your Smooth hydrangea some extra nutrients during the fall planting process or during the late spring will help your Smooth hydrangea hold more energy to use once active growth resumes.
Timing is crucial when it comes to fertilizing Smooth hydrangea. If you use fertilizer too early while the Smooth hydrangea is still dormant at this time. This fertilizer cannot be used effectively and will be washed away by rainwater, causing waste and pollution. The first application of fertilizer should be applied in the early spring. Continue fertilizing once a month until early summer.
The ideal fertilizer for a Smooth hydrangea is one that has a relatively balanced mix of the three main plant nutrients, with slightly higher amounts of phosphorus. Alternatively, some gardeners choose to improve their Smooth hydrangea 's soil by adding organic materials such as compost, worm castings, and manure. Some experienced gardeners will supplement 1-2 times with water-soluble fertilizers containing phosphorus when the flower buds start to appear. This will help the flowers develop better and allow them to grow larger and bloom longer. Fertilizers can come in many forms, and most of these forms will work well for your Smooth hydrangea. However, some of the best fertilizers for Smooth hydrangea come in either a liquid or a powdered form. Regardless of which you use, you should ensure that you dilute your fertilizer and apply it while watering your Smooth hydrangea.
Always follow directions for the specific type of fertilizer and do research on how to use it for the Smooth hydrangea you are growing. It is important not to over-fertilize your Smooth hydrangea, so determining the correct amount to use is crucial. The usual rule of thumb is to use the age of the tree (if known) or the diameter of the trunk to understand how much fertilizer should be used. Estimate a one-tenth of a pound of fertilizer per year or per inch of trunk, with a maximum of one pound. Granular fertilizers and organic fertilizers such as blood meal are applied by sprinkling the substance around the base of the tree all the way to the drip line (the space below the farthest-reaching branches) but do not let fertilizer come in contact with the trunk. Over time, the granules break down and filter into the soil to be absorbed into the roots. After fertilizing, spread an inch-deep layer of compost around the base of the tree and water thoroughly.
It is far better to under-fertilize than over-fertilize, since you can always add more but you cannot easily take away excess fertilizer. Over-fertilizing your Smooth hydrangea may cause brown leaf tips and edges, yellowing, wilting leaves, and possibly a visible crust of fertilizer salts on the surface of the soil around the tree. This condition is called fertilizer burn and results from too many accumulated salts in the plant’s cells. If excess nitrogen is the issue, the Smooth hydrangea will produce a lot of leaves but won’t grow much flowers since nitrogen supports foliage growth. If you have overfertilized, you could try removing the top layer of soil under the Smooth hydrangea to remove the most concentrated area of fertilizer. Then flush the area by watering heavily to try to get rid of fertilizer around the roots.
Avoid giving Smooth hydrangea a fertilizer with too much nitrogen, since this can lead to development of plenty of leaves but not many blooms. Look for fertilizer with a lower level of nitrogen compared to other nutrients. Do not fertilize after the early autumn, which can cause too much growth just before winter. Also, Smooth hydrangea should not be fertilized during hot and dry times of year, since dry soil does not deliver fertilizer as effectively as moist soil. Fertilizing at this time can also stimulate growth which in turn needs more water that may not be available. It is best to keep fertilizer for earlier in the season when temperatures are cooler. Finally, remember that Smooth hydrangea can absorb fertilizer that has been applied to nearby plants or lawns, so be cautious about inadvertently giving tree/shurb a double-dose of fertilizer.
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Cultivation:SunlightDetail

What Are the Sunlight Requirements for Smooth hydrangea?

Cultivation:SunlightDetail
The native environment of smooth hydrangea is under sparse forest, so it is adaptable to partial shade. Too little sunlight will reduce the flower number or even produce no flowers, and too much sunlight may cause sunburn to flowers. In gardens, the best place to plant smooth hydrangea is a place where it can fully receive the morning sunlight while being partially shaded in the afternoon. The colder the climate, the longer sunlight exposure is needed. In the coldest hardiness zone, it requires at least 6 hours of sunlight a day. In the warm areas where it is best adapted, 3 hours of sunlight a day is enough.
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Cultivation:PruningDetail

How to Prune Smooth hydrangea?

Cultivation:PruningDetail
Hydrangeas pruning methods can be divided into two types, based on their different blossoming modes:
The first pruning method is suitable for bigleaf hydrangea (excluding 'Endless Summer', a variety that blooms on both old and new branches) and oakleaf hydrangea. These two hydrangeas bloom on old branches and have relatively strict requirements on pruning time, usually only in early summer, and no later than late summer. In late spring, they are blooming or going to bloom, and flower buds start to form or develop from late summer to the following spring. Daily pruning is required to cut off withered flowers and dead, weak, and inward-growing branches.
These hydrangeas have a distinctive feature: new branches will form on two buds adjacent to a cut. Buds that are lower then become almost undeveloped or grow poorly due to the lack of apical dominance. Therefore, pay attention to whether there are buds under the cut, as well as the height of branches and directions of buds. They have opposite branches, so the directions of reserved buds should be decided by the specific shape of the plant. Additionally, when plants are too large, they can be pruned heavily in summer. The part above the ground should be kept at about 15 cm high. This way, there will be a new, small plant at the end of the year, and it will not affect blooming next year.
The new branches of 'Endless Summer' bigleaf hydrangeas will bloom. Therefore, there are no strict requirements on pruning time; just avoid pruning in spring when buds are formed. Pruning during the rest of the year does not affect flowering, and plants are usually pruned in winter after the leaves fall.
The second pruning method is suitable for smooth hydrangea and panicle hydrangea. These two hydrangeas bloom on new branches grown that year, so there is a large window for pruning. Blooming will not be affected by pruning in all seasons except during spring budding. The only existing smooth hydrangea is the Annabelle series. After its leaves fall in winter, the parts of Annabelle above the ground can be completely cut off. However, this results in one disadvantage: the flowerhead of smooth hydrangea is very large and attaches to the annual branch, which is top-heavy, so support is required. Therefore, several main branches and primary side branches should be specially trained during pruning to prevent lodging during blooming.
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Advanced Care Guide

Cultivation:WaterAndHardinessDetail

What is the Ideal Temperature Range for Smooth hydrangea?

Cultivation:WaterAndHardinessDetail
Smooth hydrangea likes cool and moist environments with relatively small seasonal and day-night temperature differences. The best temperature for it is 18 to 29 ℃ and winter temperatures should not be lower than -1 ℃. The differentiation of flower buds requires temperatures of 4 to 7 ℃ for 6-8 weeks. Blooming can be promoted under 19 ℃. The flowers fade faster under high temperatures above 30 ℃. Smooth hydrangea has relatively strict requirements for soil, which should be moist, permeable, and free of accumulated water.
What is the optimal temperature for Smooth hydrangea?
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Cultivation:SoilDetail

What Soil is Best for Smooth hydrangea?

Cultivation:SoilDetail
Smooth hydrangea requires soil that is rich in humus and well-drained. It likes moist soil but is not resistant to waterlogging. If the soil is heavy, coarse sand or organic fertilizer can be added to improve draining and permeability. This can also increase the organic matter content. If the soil easily dries out, cover it with organic mulch to keep it moist while maintaining ventilation.
The soil pH will affect flower colors of some varieties of bigleaf hydrangea. Smooth hydrangea growing in acidic and aluminum-rich soils will bloom in blue, while in alkaline soils they bloom in pink. An appropriate amount of aluminum sulfate or lime can be added to the soil to adjust the pH if you want to control the flower color.
Cultivation:PlantingDetail

How to Plant Smooth hydrangea?

Cultivation:PlantingDetail
The ideal planting time for smooth hydrangea is early spring or late autumn. A very high survival rate can be obtained by transplanting smooth hydrangea after it has gone completely dormant. Additionally, it can also be planted in late spring and early summer, but make sure the soil is always moist and well-draining. During the initial stage of transplanting, pay attention to shading. Proper shading will reduce the evaporation rate and prevent sunburn.
For transplanting, dig a pit 61 cm wider than the diameter of, and as deep as, the plant's root ball. Cover the pit with soil and pile up a small soil mound aboveground to help with water drainage. If planting in a flowerpot, make sure the diameter of the pot is at least twice as big as the root ball.
Cultivation:HarvestDetail

How to Harvest Smooth hydrangea?

Cultivation:HarvestDetail
Smooth hydrangea inflorescences can be divided into two categories according to their shapes: Lacecap and Mophead. Both can be used as cut flowers. The inflorescences can be cut with sharp scissors as soon as they fully bloom. The best time to pick flowers is early morning, which helps avoid the effects of evaporation. The stem should be cut at a 45-degree angle and soaked in cool water as soon as possible to prevent moisture loss.
PlantCare:TransplantSummary

How to Transplant Smooth hydrangea?

PlantCare:TransplantSummary
For smooth hydrangea, the best time to transplant is during the temperate months between mid-spring and early summer. Choose a location with partial to full sunlight and well-drained soil. Remember to water thoroughly after transplanting to establish strong roots.
Cultivation:PottingSuggestions

How to Repot Smooth hydrangea?

Cultivation:PottingSuggestions
Needs excellent drainage in pots.
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Seasonal Care Tips

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Spring

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Summer

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Fall

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Winter

This plant requires some care in the spring to encourage blooming.

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1
Cut off old flower heads, but only if the plant isn’t producing buds. If so, wait to prune until next spring.
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2
After pruning, give the plant an application of a balanced fertilizer, and reapply right before the buds begin opening.
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3
Water the plant thoroughly after fertilizing and keep the soil consistently moist throughout the growing season.
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4
The plant is occasionally grown in containers. Spring is the best time to move the plant to a larger pot. When roots begin appearing above the soil line or growing out of drainage holes, it’s time to repot it.

The plant is a thirsty plant in the summer.

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1
Watering frequency is one of the most common problems gardeners experience. If the leaves begin drooping, water the soil deeply but avoid getting moisture on the leaves. Mulching will help reduce watering frequency.
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2
Remove any spent blooms, but do not prune back the woody stems.
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3
Continue fertilizing the plant to encourage leaf growth.
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4
The plant requires some protection from the summer sun. Move container plants to a partially shady area.
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5
You can propagate the plant by taking cuttings from hardened wood. Avoid clipping green growth for use as cuttings.

During the autumn, you may begin to prepare your plant for dormancy in the winter.

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1
Make sure the plant receives shade and is exposed to lower temperatures before the cold sets in
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2
New wood varieties of the plant that bloom in the autumn can be lightly pruned back in the late fall, so after the flowering season deadhead spent blooms and trim away any weak parts of the plant. Don't prune old wood varieties.
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3
You may also propagate new plants at this time.
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4
Give your plant a few deep waterings throughout the fall so it can stay hydrated in the winter.

This plant typically go dormant during the cold winter months.

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1
During late fall or early winter, before the cold really sets in, add cold protection to your plant in the form of several inches of mulch.
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2
Apply less mulch in temperate climates and more mulch in freezing climates. If possible, you can move your potted plants indoors to shelter them from the freezing weather and frost that they’ll be exposed to outside.
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3
Don't do any extra pruning during this season, which can damage rather than help this dormant plant.
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Common Pests & Diseases

Common issues for Smooth hydrangea based on 10 million real cases
Caterpillars
Caterpillars
Caterpillars, or defoliatory larval stage of moths and butterflies, can infest and negatively affect the health of Smooth hydrangea. They chew on the leaves, leading to stunted growth, and can sometimes result in plant death.
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Brown blotch
Brown blotch Brown blotch
Brown spot is a common fungal disease affecting diverse plant species, including the Smooth hydrangea. The disease manifests as brown spots on the leaves, weakening the plant's vigor and aesthetic appeal while potentially diminishing overall health if left untreated.
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Leaf rot
Leaf rot
Leaf rot is a widespread disease affecting Smooth hydrangea, leading to severe foliage decay and stunted growth. This disease is caused by several fungal agents, often accelerated by high humidity and improper care. With an effective management plan, its impact can be minimized.
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Wilting
Wilting
Wilting is a deadly plant disease affecting Smooth hydrangea and inhibiting nutrient and water transport. The collapse of plant cells leads to the drooping of leaves and eventual plant death. Timely intervention through proper plant care and treatment can save afflicted plants.
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Wilting after blooming
Wilting after blooming Wilting after blooming Wilting after blooming
Flowers may wither for a variety of reasons.
Solutions: Check the soil or potting medium. Coarse textures can allow water to drain too rapidly, preventing the plant from taking up enough. If the soil and roots seem very dry, add sphagnum moss or other mediums that hold water. Water according to recommendations for each plant's species. Low humidity can be corrected by misting the plant regularly or placing it near a humidifier. Keeping it near other plants helps, too. Keep the environment consistent in terms of temperature, humidity, and lighting. Keep it away from vents, heaters, and air conditioners, and avoid moving it to locations where it will experience a temperature shock. Hot, dry heat, and cold drafts are problematic for many plants. Especially if the plant is outside, it could be experiencing heat or light stress. Try moving it to a shadier location.
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Leaf beetles
Leaf beetles Leaf beetles Leaf beetles
Leaf beetles are a class of colored insects 1 to 2 cm in size. They gnaw on leaves and petals resulting in small, round holes scattered over the surface.
Solutions: For less serious cases: Remove beetles, nymphs, and eggs. Remove all life stages of the beetles and kill them by placing them in a bucket of warm, soapy water. This can be done more easily by placing the bucket under affected leaves and shaking the plant. This method is most effective in the afternoon when leaf beetles are more active. Always dispose of insects in a sealed bag or container to avoid escape and spread. To treat more serious infestations: Apply organic insecticides. Use naturally-derived insecticides before moving on to synthetic insecticides. Neem oil and pyrethrum are naturally-derived insecticides that should be applied following label instructions. Apply synthetic insecticides. Examples of insecticides effective for leaf beetles include carbaryl, permethrin, and bifenthrin. Apply insecticides according to label instructions.
Learn More About the Leaf beetles more
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Caterpillars
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Caterpillars Disease on Smooth hydrangea?
What is Caterpillars Disease on Smooth hydrangea?
Caterpillars, or defoliatory larval stage of moths and butterflies, can infest and negatively affect the health of Smooth hydrangea. They chew on the leaves, leading to stunted growth, and can sometimes result in plant death.
Symptom Analysis
Symptom Analysis
Smooth hydrangea plants affected by caterpillars display chewed leaves with visible holes or saw-toothed edges. Severely infested plants may be defoliated entirely. Yellowing, wilting, and slowed growth may also be observed.
What Causes Caterpillars Disease on Smooth hydrangea?
What Causes Caterpillars Disease on Smooth hydrangea?
1
Organism
The caterpillar is the larval stage of certain insects, particularly those belonging to the Lepidoptera order, which includes moths and butterflies.
2
Environmental conditions
They are more likely to appear during damp, warm climates, where their food plants are present.
How to Treat Caterpillars Disease on Smooth hydrangea?
How to Treat Caterpillars Disease on Smooth hydrangea?
1
Non pesticide
Handpicking: Regularly check Smooth hydrangea for caterpillars and pick them off by hand.

Natural predators: Encourage birds and other natural predators, such as wasps, as they help keep the caterpillar population under control.
2
Pesticide
Insecticidal soap: Use a mild solution of insecticidal soap, which is safe for plants and lethal to caterpillars.

Bacillus thuringiensis (Bt): A biological pesticide that specifically targets caterpillars.
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Brown blotch
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch Disease on Smooth hydrangea?
What is Brown blotch Disease on Smooth hydrangea?
Brown spot is a common fungal disease affecting diverse plant species, including the Smooth hydrangea. The disease manifests as brown spots on the leaves, weakening the plant's vigor and aesthetic appeal while potentially diminishing overall health if left untreated.
Symptom Analysis
Symptom Analysis
The Smooth hydrangea exhibits brown spots or lesions on leaves, usually surrounded by a yellow halo. These spots can merge, leading to largescale leaf damage. If severe, the leaves may yellow and fall off, impacting plant growth.
What Causes Brown blotch Disease on Smooth hydrangea?
What Causes Brown blotch Disease on Smooth hydrangea?
1
Fungus
The brown spot disease is primarily caused by several strains of fungi, including Bipolaris spp., Drechslera spp., and others.
2
Environmental conditions
Favorable conditions, such as high humidity and warmth, facilitate the disease's spread and development.
How to Treat Brown blotch Disease on Smooth hydrangea?
How to Treat Brown blotch Disease on Smooth hydrangea?
1
Non pesticide
Sanitation: Regularly remove and dispose of affected leaves to prevent spore spread.

Plant care: Maintain optimum growth conditions for the Smooth hydrangea, avoiding overcrowding and ensuring good air circulation.
2
Pesticide
Fungicides: Apply approved fungicides that target the brown spot's causing fungi.

Regular treatment: Repeat applications according to product instructions until the disease is under control.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Smooth hydrangea?
What is Leaf rot Disease on Smooth hydrangea?
Leaf rot is a widespread disease affecting Smooth hydrangea, leading to severe foliage decay and stunted growth. This disease is caused by several fungal agents, often accelerated by high humidity and improper care. With an effective management plan, its impact can be minimized.
Symptom Analysis
Symptom Analysis
Leaf rot initially manifests on Smooth hydrangea as yellowing and wilting of leaves. Over time, the affected leaves darken, decay and fall off. In advanced stages, stunted growth and branch dieback are commonly observed.
What Causes Leaf rot Disease on Smooth hydrangea?
What Causes Leaf rot Disease on Smooth hydrangea?
1
Fungi
Leaf rot in Smooth hydrangea is commonly attributed to a selection of fungi, including Phytophthora, Pythium and Rhizoctonia.
2
Environmental Conditions
High humidity, overwatering, and poor drainage also contribute to the proliferation of the disease.
How to Treat Leaf rot Disease on Smooth hydrangea?
How to Treat Leaf rot Disease on Smooth hydrangea?
1
Non pesticide
Pruning: Regularly prune affected leaves and branches to retard disease progression and improve air circulation.

Optimized Watering: Avoid overwatering and water at the base of the plant to minimize leaf wetness.
2
Pesticide
Fungicides: Application of approved fungicides can help control the disease, however, their use should be as per the labeled instructions.
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Wilting
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Wilting Disease on Smooth hydrangea?
What is Wilting Disease on Smooth hydrangea?
Wilting is a deadly plant disease affecting Smooth hydrangea and inhibiting nutrient and water transport. The collapse of plant cells leads to the drooping of leaves and eventual plant death. Timely intervention through proper plant care and treatment can save afflicted plants.
Symptom Analysis
Symptom Analysis
Symptoms in Smooth hydrangea include sudden wilting and yellowing of leaves, followed by browning and dying off. The initial wilt may appear to be reversible during cooler periods of the day; however, the plant does not recover and eventually dies.
What Causes Wilting Disease on Smooth hydrangea?
What Causes Wilting Disease on Smooth hydrangea?
1
Pathogen
Mainly caused by Fusarium oxysporum, a soil-borne fungus that disrupts water flow in the plant.
2
Soil conditions
Overly wet or dry soils that stress the plant, making it more susceptible to pests and diseases.
How to Treat Wilting Disease on Smooth hydrangea?
How to Treat Wilting Disease on Smooth hydrangea?
1
Non pesticide
Drainage improvement: Proper soil drainage to avoid overly wet conditions.

Plant care: Regular health checkups to detect early disease signs, providing an opportunity for early intervention.
2
Pesticide
Fungicides: Apply systemic fungicides to control the spread once detected.

Disease-resistant varieties: In severe cases, it may be beneficial to use disease-resistant varieties.
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Wilting after blooming
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Wilting after blooming
Flowers may wither for a variety of reasons.
Overview
Overview
Wilting after blooming is sometimes a natural aging process of the flower, while other times it may indicate a problem. Orchids, for example, can bloom for anywhere from two weeks to three months, so wilting after a few days signals a problem for most varieties. This can happen to virtually any ornamental flowering plant, but those with shallow roots and limited tolerance for drought, full sun, and low humidity are more susceptible.
This is a common problem, and often has an easy fix. Sometimes, however, it is the result of more serious causes such as pests or disease of the root system.
Symptom Analysis
Symptom Analysis
  • At first, flowers may look a little limp.
  • Petals may start to appear dried out and turn brown.
  • Eventually they may drop off the plant all together.
Disease Cause
Disease Cause
Wilting blooms can be a sign of an unhealthy root system. Any condition that prevents the plant from absorbing enough water and nutrition can result in wilting blooms and sometimes other symptoms. If the plant doesn’t have enough water, it cannot maintain appropriate pressure within stems, leaves, and blooms, causing them to wilt.
This can result from physical damage – for example from root breakage during re-potting or attack by insects like cutworms. If you recently re-potted your plant, physical damage to the roots is a likely cause. If you see insects, they may be eating leaves, roots, or flowers. Fungal infections can also cause root rot and damage, preventing water and nutrient uptake.
Finally, wilting blooms can result simply from age. If no other symptoms are visible, it may simply signal the natural end of the flower’s lifespan. If it seems premature, this may be caused by environmental factors: water, humidity, light, or stress. Under-watering is a common cause. Similarly, plants adapted to high humidity dry out easily when humidity is low, like during winter or in dry climates. Too much light can also stress plants that need shade, causing blooms to wilt.
Solutions
Solutions
  • Check the soil or potting medium. Coarse textures can allow water to drain too rapidly, preventing the plant from taking up enough. If the soil and roots seem very dry, add sphagnum moss or other mediums that hold water.
  • Water according to recommendations for each plant's species.
  • Low humidity can be corrected by misting the plant regularly or placing it near a humidifier. Keeping it near other plants helps, too.
  • Keep the environment consistent in terms of temperature, humidity, and lighting. Keep it away from vents, heaters, and air conditioners, and avoid moving it to locations where it will experience a temperature shock. Hot, dry heat, and cold drafts are problematic for many plants.
  • Especially if the plant is outside, it could be experiencing heat or light stress. Try moving it to a shadier location.
Prevention
Prevention
  • Read up on moisture, light, and soil type preferences for each plant to avoid underwatering, incorrect light levels, or other conditions that can cause wilting blooms.
  • Avoid re-potting during the flowering period. This causes additional stress on the plants because they need to repair root damage and adapt to the new micro-environment, all of which can result in wilting.
  • One other potential cause is ethylene gas, a plant hormone related to ripening. Some fruits and vegetables emit ethylene, especially bananas. Apples, grapes, melons, avocados, and potatoes can also give it off, so keep flowering plants away from fresh produce.
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Leaf beetles
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Leaf beetles
Leaf beetles are a class of colored insects 1 to 2 cm in size. They gnaw on leaves and petals resulting in small, round holes scattered over the surface.
Overview
Overview
Leaf beetles range in size from 1.5 mm to 2 cm. Both adult beetles and their larvae eat the leaves of many different types of plants. There are over 35,000 different species of leaf beetles, in a variety of colors including gold, green, yellow-striped, and red striped. Some of these have been mistaken for ladybirds because of their shape and coloring. They can be oval, round, or elongated in shape. These insect pests are most active in spring and summer.
If not controlled, leaf beetles can do a lot of damage to vegetable crops and ornamental plants. They feed on the leaves, flowers, stems, roots, and fruits of different plants. They can fly, which means it's easy for them to move from one plant to another. Some species of leaf beetles only target one specific crop, while others will target many different types of plants. Although a lot of the damage that they cause is cosmetic, an infestation can weaken a plant and leave it prone to other more problematic diseases.
Symptom Analysis
Symptom Analysis
The first signs of a leaf beetles infestation are small visible holes in leaves. Leaves then become discolored and dark beetle droppings can be seen. As the leaves turn yellow and brown, they will drop off the plant onto the ground. Some leaves will appear skeletonized with only the veins still remaining.
Infestation begins in spring, when the adult beetles emerge from the soil and lay their eggs on the leaves of plants. When these eggs hatch, the young nymphs start munching on the leaves as they grow up. Once leaf beetles are large and mature, they'll fall to the ground and pupate in the soil over winter before starting the cycle all over again.
Leaf beetles also eat holes in fruits and vegetables. These can be seen as small round holes that sometimes have a larger brown area surrounding them.
Solutions
Solutions
For less serious cases:
  1. Remove beetles, nymphs, and eggs. Remove all life stages of the beetles and kill them by placing them in a bucket of warm, soapy water. This can be done more easily by placing the bucket under affected leaves and shaking the plant. This method is most effective in the afternoon when leaf beetles are more active. Always dispose of insects in a sealed bag or container to avoid escape and spread.
To treat more serious infestations:
  1. Apply organic insecticides. Use naturally-derived insecticides before moving on to synthetic insecticides. Neem oil and pyrethrum are naturally-derived insecticides that should be applied following label instructions.
  2. Apply synthetic insecticides. Examples of insecticides effective for leaf beetles include carbaryl, permethrin, and bifenthrin. Apply insecticides according to label instructions.
Prevention
Prevention
To prevent infestations of leaf beetles, follow these practices.
  1. Regularly check for beetles. To prevent large pest infestations, be proactive about frequently checking plants for pests and removing them quickly.
  2. Clear debris. Clear weeds and debris to remove areas where these beetles may overwinter and hide.
  3. Attract natural predators. Birds and other insects, such as wasps and ladybugs, are effective natural predators of leaf beetles. Encourage them to visit by including a diverse array of plants to provide habitat and food. Also, avoid applying broad-spectrum herbicides that can harm and kill beneficial insects.
  4. Plant aromatic herbs like mint, garlic, or rosemary, as these can repel leaf beetles.
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Smooth Hydrangea and Their Toxicity

* The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
Toxic to Dogs
Smooth hydrangeas are mildly poisonous to dogs. Their leaves, flowers, and buds all contain the toxic substance, with the highest concentrations being found in flowers and young leaves. Vomiting and diarrhea are the most common symptoms of smooth hydrangea ingestion. Thankfully, severe poisoning cases are rare - this toxin must be consumed in very large amounts to be fatal.
Toxic to Cats
The smooth hydrangea (Hydrangea arborescens) is moderately poisonous to cats. The leaves and all parts of the flower contain the toxin. When eaten in sufficient amounts, they can cause nausea, diarrhea, vomiting, labored breathing, lethargy, and dermatitis. Small cats and kittens are at the highest risk of serious illness. Consult your veterinarian if your cat has eaten any part of this plant.
close
Who Is Most at Risk of Plant Poisoning?
Your pets like cats and dogs can be poisoned by them as well!
1
Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
2
It’s better to kill those growing around your house. Wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages, and do not let your pets reach it;Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
7
If you take your pets to hike with you in the wild, please don’t let them eat any plants that you don’t know;
8
Once your pets eat, touch or inhale anything from toxic plants and act abnormally, please call the doctors for help ASAP!
pets
Pets
Some pets are less likely than children to eat and touch just about everything. This is good, as a pet owner. However, you know your pet best, and it is up to you to keep them safe. There are plenty of poisonous weeds that can grow within the confines of your lawn, which might make your dogs or cats ill or worse if they eat them. Try to have an idea of what toxic plants grow in your area and keep them under control and your pets away from them.
pets
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
tend2
If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

plants
The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
close
Who Is Most at Risk of Plant Poisoning?
Everyone should keep the following in mind to prevent being poisoned:
1
Do not eat any parts, nor contact with the sap of toxic or unknown plants;
2
If you need to kill it, wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages;
7
Wear properly when you hiking or working in the wilderness. Long pants, long sleeves, gloves, hiking shoes, etc., that protect you from being hurt by any plants;
8
Once you or your family aren’t feeling well after eating, touching or inhaling anything from toxic plants, please call your doctor for help ASAP!
Outdoor Workers
Outdoor Workers and Recreationalists
Those who enjoy the outdoors either as a hobby or as part of their work will rarely see a plant and decide to munch on it (although the scenario is not unheard of). However, they do tend to deal with moving through and brushing aside plants. These people are more at risk of being poisoned by touching toxic plants than by ingesting them.
Outdoor Workers
Foragers
Foragers
Foraging for food and medicinal plants is a desirable skill among people who want to feel at one with the land. This hobby can be very useful and enjoyable, but if done wrong , it can lead to disastrous effects. People who forage are picking and grabbing plants with the full intention of using those plants, most of the time to ingest them.
Foragers
Children
Children
While outdoor workers are more likely to touch poison and foragers are more likely to ingest poison, children can easily do both. These bundles of joy just love to run around and explore the world. They enjoy touching things and occasionally shoving random stuff in their mouth; this is a terrible combination with toxic plants in the mix.
If you let your children run about, it is important to know what are the local toxic plants that they could accidentally get into. Try to educate the children and steer them away from where the toxic plants are located.
Children
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
tend2
If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

plants
The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
care_more_info

More About Smooth Hydrangea

Plant Type
Plant Type
Shrub
Lifespan
Lifespan
Perennial
Spread
Spread
91 to 152 cm
Bloom Time
Bloom Time
Summer
Flower Color
Flower Color
White
Green
Cream
Pink
Leaf Color
Leaf Color
Green
Flower Size
Flower Size
0.6 to 1.1 mm
Plant Height
Plant Height
1 to 3 m

Name story

Smooth hydrangea
As compared to any common hydrangea, the flowers are denser in this plant. This makes the flower ball look full and smooth like a snowball, so it is called smooth hydrangea.
Sevenbark
The stem bark has a peculiar tendency to peel off in several successive thin layers with different colors, so the common name is called sevenbark.

Usages

Garden Use
Smooth hydrangea is a flowering shrub that is sometimes grown ornamentally for its unusually shaped green-white flowers. This plant spreads rapidly and is, therefore, a good choice of ground cover plant. It also makes for a great flowering hedge and looks great in mixed borders. Azaleas grow well with hydrangeas since they bloom early, offering garden color before smooth hydrangea flowers.
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care_faq

Common Problems

Why are leaves withering?

more more
Smooth hydrangea typically displays leaf withering during hot summers. It likes being in the sun but cannot stand intense sunlight, especially in summer. Due to its large leaves, it loses water quickly. If the leaves are exposed to daylight after a significant water loss, it will wither. Before planting, it is best to select a location with filtered light and partial shade. Additionally, a loose, air-permeable, and well-draining medium should be used.

My smooth hydrangea did not bloom much in past years: only one flower last year. What can I do?

more more
First, make sure your plants were pruned in time; some varieties bloom on old branches, so the pruning window is very small. They can only be pruned in June and July after they fully bloom. After that, flower buds begin to grow for the next year, so they won't bloom if they are pruned in winter. If the plants were pruned properly, consider the sunlight at the planting location. Though smooth hydrangea is shade-tolerant, it needs sufficient sunlight to bloom. If the above causes are ruled out, you can apply some organic fertilizer or slow-release fertilizer under the soil surface during winter, and apply supplemental, water-soluble fertilizer containing phosphorus and potassium in spring and fall.

How do I change the color of smooth hydrangea flowers?

more more
Most flowers will change color naturally from white to pink and then lavender over time. In some varieties, such as 'Endless Summer', the flower color is influenced by the pH of the soil. The flowers turn blue when smooth hydrangea grows in acidic soil (pH<6), while the flowers are pink to red when it grows in alkaline soil (pH >7). The flowers are purple or blue-pink in slightly acidic or neutral soil (pH 6-7). Aluminum sulfate can be used to make the soil acidic, while lime may be used to make the soil alkaline.
care_new_plant

Caring for a New Plant

new-plant
The following pictures and instructions for flower plant are aimed to help your plants adapt and thrive in a new environment.
more
1
Picking a Healthy Flower Plant
check-health

Check Its Health

part
Whole Plant
Symmetrical crown, evenly distributed branches, full and compact shape, no excessive growth, close internodes, and uniform leaf size.
more
Flowers
Many unopened flower buds are closely attached, without falling off easily when shaken, and show no diseased spots or wilting on the petals.
part
Branches
The branches are not withered, and the trunk is free of boreholes or damage.
part
Stems
No mold, browning or soft rot at the base of the plant.
more
Leaves
Check the inside of the plant, shaded and overlapping areas, back of leaves. Even colour, no yellowing, no brown spots, no crawling insects, no cobwebs, no deformities, no wilting.
health-trouble

Health Troubleshooting

Whole Plant
Branches
Stems
Flowers
Leaves
more
more 1 Asymmetrical crown or missing, uneven branching: prune the weak and slender branches of the larger portion of the asymmetrical crown, then trim the overgrown larger branches.
more
more 2 Internodes are longer in the upper part, leaves are sparse and smaller on top: increase light intensity or duration.
more
more 1 Dry branches: check if the branch is still alive by peeling back a small section of bark and trim away any dry branches. Watch out for signs of insect infestation inside the branch.
more
more 2 Bark with holes: inject insecticide into the holes and apply systemic insecticide to the roots.
more
more 3 Damaged bark: brush on a wound-healing agent, and avoid getting it wet.
more
Mildew, browning, or soft rot at the base: place the plant in a ventilated, dry environment and water with fungicide.
more
more 1 Many flowers have already bloomed: lower the temperature in the environment to extend the flowering period. Prune any dying flowers in a timely manner to prevent nutrient depletion.
more
more 2 Flower bud dropping: keep temperature at 15-25℃, place in bright but shaded area, water frequently, and avoid fertilizing.
more
more 3 Flower petals have spots or disease: avoid spraying water directly onto the petals.
more
more 4 Flower wilting: avoid soil that is too wet or too dry. When touching the soil with your finger, it should feel moist but not leave any water traces on your finger.
more
more 1 Uneven leaf color and yellowing: prune yellow leaves and check if there are signs of rot at the base of the plant. Spray with fungicide for severe cases.
more
more 2 Brown spots or small yellow spots: place the plant in a ventilated area and avoid watering the leaves. Spray with fungicide for severe cases.
more
more 3 Tiny crawling insects on the back of leaves or spider webs between leaves: increase light exposure and spray with insecticide for severe cases.
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more 4 Deformations or missing parts on leaves: determine if it's physical damage or pest infestation. Linear or tearing damage is physical, while the rest are pests. Spray with insecticide.
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more 5 Wilting leaves: provide partial shade and avoid excessive sun exposure. Remove 1/3 to 1/2 of the leaves for severe cases.
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Check Its Growing Conditions

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Soil Check
Soil should smell fresh like after a rain and no musty odor.
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Light Check
Check the light requirement of the plant and if it match with planting location.
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Ventilation Check
Ensure good ventilation.
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Temperature Check
Ensure outdoor temperature is suitable for plants.
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Condition Troubleshooting

Soil
Ideal Temperature
Ventilation
Suitable Light
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Potting mix soil, Peat moss mix soil
Soil
Soil smells musty or foul: check the root system for decay, place the plant in a ventilated, dry environment, and water with fungicide.
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-10℃ to 35℃
Ideal Temperature
Temperature is too low: Temporarily move the plants indoors and then to outdoors when temperature is suitable.
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Well Ventilated
Ventilation
Non-ventilated environment: can lead to root rot, diseases, and flower drop. Place the plants in an airy location avoiding dead spots.
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Partial sun, Full shade
Suitable Light
Insufficient light: reduce light appropriately during flowering period but not a fully shaded environment. After flowering, move to normal cultivation environment. For plants with long flowering and fruiting periods, provide normal light to avoid shortening.
Transplant recovery: After transplanting, pot plants should be temporarily shaded, then moved to normal light after a week if no abnormal drop or wilting. In-ground plants, shade for a week and then transfer to normal light or just pay attention to watering.
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2
Adapting Your New Flower Plant
Step 1
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Repotting
Potted plants - Wait until flowering stage is over before changing pots. In-ground plants - Plant directly taking care not to harm root system or remove soil.
Step 2
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Pruning
Prune residual flowers, yellow/dead leaves. No other pruning at this time.
Step 3
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Watering
Water appropriately. Water more frequently for newly transplanted or purchased plants to keep the soil consistently moist for at least 2 weeks. Avoid overwatering, do not water when there is water on your finger after touching the soil. Both underwatering and overwatering can cause plants to drop their flowers or fruit.
Step 4
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Fertilizing
Don't fertilize just after purchase. Fertilize after 2 weeks using half concentration.
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Water
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Smooth Hydrangea Watering Instructions
Smooth hydrangea comes from woodland and open areas in North America, including the eastern United States and Canada. It prefers well-drained soil and moderate to high levels of moisture. This plant's native habitat indicates its need for regular watering, as it is accustomed to receiving sufficient rainfall. To meet its watering needs, it is essential to keep the soil consistently moist without allowing it to become waterlogged.
When Should I Water My Smooth Hydrangea?
Introduction
Proper and timely watering plays a crucial role in maintaining the overall health and development of the smooth hydrangea. It contributes to its optimal growth, vibrant flower production, and resistance against diseases. Therefore, understanding the appropriate signals indicating when the plant should be watered is essential.
Soil Dryness
A clear sign of when smooth hydrangea needs water is the dryness of the soil. This can be checked by touching the soil around the plant base. If the top 1 to 2 inches of soil is dry to the touch, this means the plant most likely requires watering.
Leaf Condition
The condition of the leaves of smooth hydrangea can also be a reliable indicator for watering necessities. If the leaves appear wilted, lackluster, or begin to lose their vibrant color tending to fade or yellow, these are indicative of the plant being under-watered.
Stem Drooping
When the stems of smooth hydrangea appear droopy or bending, it is a sign that the plant is experiencing water stress and requires immediate watering.
Flower Heads Drooping
If the flower heads of smooth hydrangea start to droop or wilt, it indicates that the plant is in need of water. This is especially important to note during the flowering season.
Pre-Flowering Stage
Smooth hydrangea particularly requires watering during its pre-flowering or bud formation stage. A lack of water during this critical period may result in bud drop, preventing the plant from flowering fully.
Temperature And Sunlight Exposure
Smooth hydrangea has a high water requirement during warm temperatures and high sunlight exposure periods. Therefore, one must ensure to observe proper watering if these conditions are persistent.
Early Watering Risks
Watering smooth hydrangea too early, when the soil is still moist, could risk root rot, fungus infestation, and other root diseases due to over-watering.
Late Watering Risks
Watering smooth hydrangea too late, when it has been excessively dry for an extended period, could risk temporary wilting and might stunt the plant's growth. In extreme conditions, it can lead to plant death due to dehydration.
Conclusion
Understanding these signs is critical to effectively manage the watering schedule for the smooth hydrangea. Proper water management not only encourages its growth and flowering but also prolongs its life span and maintains plant health.
How Should I Water My Smooth Hydrangea?
tender sensitivity
Yes, smooth hydrangea is sensitive to over-watering and under-watering both. It needs a carefully managed watering routine that ensures it remains well-hydrated without causing root rot or drying.
watering technique
The most effective way to water smooth hydrangea is by using a watering can with a long, narrow spout. This allows you to concentrate the water directly onto the soil, near the root zone, rather than on its leaves or flowers. Misting is not recommended for this species as it may promote certain diseases or pests.
tools
Using a moisture meter can greatly benefit the watering regime for smooth hydrangea. This tool can help you accurately measure the moisture content in the soil, thereby preventing over-watering or under-watering.
areas to target
While watering smooth hydrangea, aim for the root zone or the base of the plant. Deadheading is encouraged with this plant, so removing spent blooms can also help direct water from the can to the intended area more efficiently.
areas to avoid
Avoid watering the foliage of smooth hydrangea excessively. This plant is susceptible to fungal diseases that can be triggered by high humidity around the leaves. If the foliage is unnecessarily drenched, it may promote such conditions.
extra caution
Although smooth hydrangea is a fairly resilient plant, it responds adversely to extreme dry or wet conditions. Check the soil regularly with a moisture meter, and only water when the top inch of the soil feels dry to touch to ensure optimal hydration.
How Much Water Does Smooth Hydrangea Really Need?
Introduction
Smooth hydrangea is a species of plant native to North America. It thrives in the wild in a variety of habitats such as moist woodlands, stream banks, and wet meadows. Its natural habitat indicates a preference for moderately moist to wet conditions.
Optimal Watering Quantity
Root Depth: smooth hydrangea's root system typically extends 12-18 inches deep in the ground. To ensure proper hydration, the water needs to reach the deeper roots. Pot Size: Larger pots retain water longer than smaller pots. Adjust watering accordingly. Plant Size: Young plants require less water compared to mature ones. Provide 1-2 inches of water per week during the growing season.
Signs of Proper Hydration
Leaves: Well-hydrated plants will have lush, green leaves. Wilting or yellowing leaves indicate underwatering, while drooping or brown leaves may signify overwatering. Soil: Moist, but not waterlogged soil is ideal. The top inch of soil should be slightly dry before the next watering session.
Risks of Improper Watering
Overwatering can lead to root rot and leaf diseases. It may also impede the growth of the plant and cause nutrient deficiencies. Underwatering can cause the plant to wilt and stunt its growth. It can also make the plant more susceptible to pests and diseases.
Additional Advice
For potted smooth hydrangea, ensure proper drainage to prevent waterlogging. Mulching can help retain soil moisture. During dry periods, regular monitoring of soil moisture is important as water needs may increase. In hotter climates, smooth hydrangea may require more frequent watering.
How Often Should I Water Smooth Hydrangea?
Every 1-2 weeks
Watering Frequency
Smart Seasonal Watering
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Just like people, each plant has its own preferences and needs. Devote time to understanding your plants so you can nurture them properly. Observe your plants attentively, learning from their growth patterns, and becoming more in tune with their needs as you grow together. Keep a watchful eye on new plants and seedlings, as they are sensitive to both overwatering and underwatering. Shower them with gentle love and attention, fostering their growth and strength. Let the rhythm of your local climate guide your watering habits, adapting your schedule to the changing weather and the needs of your plants.
What Kind of Water is Best for Smooth Hydrangea?
Preferred Water Type: smooth hydrangea
does well with rainwater, distilled water and tap water. The plant is not very particular with water type, as long as it doesn't contain heavy concentrations of harmful chemicals. Rainwater or distilled water are ideal choices as they are free of contamination.
Chlorine Sensitivity: smooth hydrangea
is somewhat tolerant to chlorine. However, letting tap water sit out for a day before watering can be beneficial to allow the chlorine to evaporate.
Fluoride Sensitivity: smooth hydrangea
can tolerate fluoride, although filtered tap water is a safer option if fluoride concentration in your tap water is high.
Mineral Sensitivity: smooth hydrangea
tolerates a range of minerals in water but moderate to high concentrations of iron, copper, or zinc can be harmful over time. In such cases, using rainwater or distilled water is beneficial.
Water Treatments: smooth hydrangea
grows best when watered with water that has been left to sit out, particularly if you're using tap water. This helps in reducing the concentration of chlorine and other harmful chemicals.
Water Temperature: smooth hydrangea
prefers water at room temperature. Extremely cold or hot water may create shock, leading to potential damage.
How Do Smooth Hydrangea's Watering Needs Change with the Seasons?
How to Water smooth hydrangea in Spring?
During spring, smooth hydrangea enters its active growth phase, with new shoots and leaves emerging. The soil should be kept evenly moist but avoid waterlogging. Mulching can help retain soil moisture and regulate temperature, setting up the plant for healthy growth. Following heavy spring rains, allow the plant to dry out slightly before resuming watering.
How to Water smooth hydrangea in Summer?
As summer temperatures rise, smooth hydrangea's evaporation rate increases, and the plant requires more water to sustain growth and flower development. Check the soil's moisture levels consistently, especially on hot, dry days, and water thoroughly when the top layer of soil feels dry to touch. However, be careful not to overwater as this could lead to root rot.
How to Water smooth hydrangea in Autumn?
In autumn, smooth hydrangea begins preparing for dormancy. Continue to keep the soil consistently moist, but consider scaling back watering as the plant's water consumption decreases. Timely watering can help the plant endure the coming winter and facilitate leaf drop and dormancy.
How to Water smooth hydrangea in Winter?
Smooth hydrangea is dormant in winter and watering needs are significantly reduced. Wait until the top few inches of soil are dry before watering. Indeed, overwatering in winter could lead to frozen roots or encourage fungal growth. Overall, aim for less frequent, but deeper watering sessions to sustain smooth hydrangea through these cold, dormant months.
What Expert Tips Can Enhance Smooth Hydrangea Watering Routine?
Moisture Meter
Using a moisture meter can help assess smooth hydrangea's deeper soil moisture needs and prevent over or under-watering. This plant prefers its soil to be mostly dry before the next watering, and a meter can effectively measure this.
Watering Time
Water smooth hydrangea in the mornings to allow the water to penetrate the soil thoroughly before the high evaporation rates of mid-day. It also helps prevent fungal diseases by minimizing the plant's exposure to dampness.
Common Misconception
A common mistake when watering smooth hydrangea is providing too much water. While it prefers consistently moist soil, over-watering can lead to root rot. It is important to strike the right balance.
Soil Moisture Assessment
To determine if smooth hydrangea needs watering, check the soil moisture beyond the surface level. Insert a finger or a skewer about two inches into the soil 鈥 if it feels dry at that depth, it's time to water.
Signs of Thirst
Watch for signs of thirst in smooth hydrangea such as drooping leaves or lack of new growth. These are indicators that the plant needs water. However, be cautious not to overwater as it can lead to root rot.
Watering During a Heatwave
During a heatwave, smooth hydrangea may require more frequent watering to prevent dehydration. Pay attention to the soil moisture and increase the frequency of watering if necessary.
Watering During Extended Rain
During periods of extended rain, it's important to monitor the soil moisture around smooth hydrangea. If the soil becomes overly saturated, consider adjusting the watering schedule to prevent root rot.
Watering When Stressed
If smooth hydrangea shows signs of stress, such as wilting, it may require extra water. Water deeply and thoroughly, ensuring the water reaches the roots. However, be careful not to create waterlogged conditions.
Mulching Benefits
Mulching around the base of smooth hydrangea can help retain soil moisture and reduce the frequency of watering. Use organic mulch, such as wood chips or compost, to improve soil health as well.
Container Watering
When growing smooth hydrangea in containers, ensure proper drainage by using pots with drainage holes. Water the plant thoroughly until the excess water drains out, and avoid leaving it sitting in water.
Fertilizer and Watering
When applying fertilizer to smooth hydrangea, water the plant before and after to prevent burning the roots. This helps the nutrients dissolve and be evenly distributed in the soil.
Seasonal Adjustments
Adjust the watering schedule for smooth hydrangea based on the season. During its active growth in spring and summer, it may require more frequent watering, while in winter, it will enter a dormant phase and need less water.
Watering at the Base
When watering smooth hydrangea, direct the water at the base of the plant rather than overhead. This helps prevent moisture-related diseases and ensures the water reaches the roots efficiently.
Considering Hydroponics? How to Manage a Water-Grown Smooth Hydrangea?
Overview of Hydroponics
Smooth hydrangea is a plant that can be successfully grown using hydroponics, which is a method of cultivating plants in a water-based environment with added nutrients. Hydroponics offers several advantages for growing smooth hydrangea, including more efficient nutrient uptake, faster growth rates, and the ability to control and optimize growing conditions.
Best Hydroponic System
The deep water culture (DWC) system is well-suited for growing smooth hydrangea. In this system, the plant roots are suspended in a nutrient-rich water solution, with an air pump providing necessary oxygenation. The DWC system ensures that the roots have constant access to water and nutrients while maintaining a proper oxygen level for optimal growth.
Nutrient Solution
Smooth hydrangea thrives with a balanced nutrient solution containing a ratio of macronutrients (N, P, K), micronutrients (Fe, Mn, Zn, etc.), and secondary nutrients (Ca, Mg, S). Maintain a nutrient concentration of around 800-1200 ppm (parts per million) for vigorous growth. Additionally, the pH of the nutrient solution should be maintained between 5.8 and 6.2 to ensure proper nutrient availability.
Nutrient Change Frequency
It is recommended to change the nutrient solution in a hydroponic system containing smooth hydrangea every 1-2 weeks. This helps prevent nutrient imbalances, buildup of salts, and promotes healthy root growth.
Challenges and Common Issues
When growing smooth hydrangea hydroponically, root rot can be a common problem. To prevent this, ensure good oxygenation of the root zone by using air stones or diffusers. Nutrient imbalances can also occur if the solution is not properly balanced or if the pH is incorrect. Regular monitoring and adjustment of the nutrient solution can help overcome these challenges. Additionally, smooth hydrangea requires adequate light for photosynthesis, so it's important to provide sufficient artificial lighting if natural light is insufficient.
Monitoring Plant Health
Monitor smooth hydrangea closely for signs of stress, such as wilting or yellowing leaves, which may indicate nutrient deficiencies or imbalances. Pay attention to changes in leaf color or texture, as well as overall plant growth. Regularly check the root system for any signs of rot or discoloration. If detected, take immediate action to prevent further damage.
Adjusting Hydroponic Environment
As smooth hydrangea progresses through different growth stages, you may need to adjust the hydroponic environment. For example, during the vegetative stage, provide higher nitrogen levels to promote leafy growth. In the flowering stage, adjust the nutrient solution to encourage blossom development. Additionally, adjust lighting duration and intensity to mimic natural day and night cycles.
Important Symptoms
Overwatering Symptoms of Smooth hydrangea
Overwatering can potentially cause disease symptoms in Smooth hydrangea, even though it thrives in a moist soil environment. However, excessive watering leading to prolonged dampness or waterlogging can result in yellowing leaves, brown or black spots, root rot...
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Yellowing leaves
When plants receive too much water, the roots become oxygen deprived and the bottom leaves of the plant gradually turn yellow.
Brown or black spots
Excessive watering can damage the plant's root system, making it vulnerable to fungal infections. The plant may develop dark brown to black spots that spread upwards from the lower leaves which are usually the first to be affected.
Root rot
Excess water in the soil can lead to the growth of harmful fungi and bacteria, causing the roots to rot and eventually kill the plant.
Stunted growth
Overwatering can reduce nutrient uptake and hinder plant growth, causing it to become stunted as the roots struggle to absorb the necessary nutrients.
Increased susceptibility diseases
Overwatering plants may become more susceptible and diseases as their overall health declines, weakening their natural defenses.
Solutions
1. Adjust watering frequency based on seasons and soil dryness. Wait for soil to dry before watering.2. Increase soil aeration by loosening surface and gently stirring with a wooden stick or chopstick.3. Optimize environment with good ventilation and warmth to enhance water evaporation and prevent overwatering.
Underwatering Symptoms of Smooth hydrangea
Smooth hydrangea is prone to experiencing plant health issues when lacking watering because it prefers a moist soil environment. Symptoms of dehydration include wilting, leaf curling, yellowing leaves...
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(Symptom details and solutions)
Wilting
Due to the dry soil and insufficient water absorption by the roots, the leaves of the plant will appear limp, droopy, and lose vitality.
Leaf curling
Leaves may curl inward or downward as they attempt to conserve water and minimize water loss through transpiration.
Loss of turgor pressure
When plants are underwatered, their cells lose water, causing a loss of turgor pressure. This can result in the plant appearing limp or deflated.
Increased susceptibility to pests and diseases
Underwatered plants may become more susceptible to pests and diseases as their overall health declines, weakening their natural defenses.
Dying plant
If underwatering continues for an extended period, the plant may ultimately die as a result of severe water stress and an inability to carry out essential functions.
Solutions
1. Thoroughly saturate soil with slow ring watering to ensure uniform and sufficient moisture for plants. 2. Increase air humidity with water trays or misting to slow leaf water evaporation. 3. Watering according to the recommended frequency.Adjust watering frequency based on seasons and soil dryness.
Watering Troubleshooting for Smooth Hydrangea
Why are the leaves of my smooth hydrangea turning brown?
Brown leaves on your smooth hydrangea can be a sign of underwatering. The soil may be too dry and the plant isn't receiving enough moisture. To remedy, adjust your watering schedule to ensure the plant gets enough water. Check the soil regularly, if the top inch is dry, it's time to water.
Why are the leaves of my smooth hydrangea drooping or wilting despite regular watering?
Droopy or wilting leaves can be a sign of overwatering. Smooth hydrangea prefers moist soil, but not waterlogged or soggy. Overwatering can cause root rot. So, reduce your watering frequency and ensure the plant has proper drainage.
What do yellow leaves with green veins on my smooth hydrangea mean?
Yellow leaves with green veins, or chlorosis, can indicate that the smooth hydrangea is waterlogged and unable to take up necessary nutrients. You should improve soil drainage and reduce watering. If the problem persists, apply a balanced, slow-release fertilizer.
Why does my smooth hydrangea has slowed or stunted growth?
This could be due to both over and underwatering. Smooth hydrangea requires regular but not excessive watering for healthy growth. Soil that is either too dry or waterlogged can hinder its ability to take up nutrients. Adjust your watering to keep the soil consistently moist but not soggy.
Why are the flowers on my smooth hydrangea fading or dropping prematurely?
The cause may be inconsistent watering. This plant requires a consistent supply of water, especially in dry conditions. If it gets too dry or experiences a draught followed by a sharp increase in water, it could cause the flowers to fade or drop. Make sure you keep a consistent watering schedule.
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Lighting
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Indoor
Indoor
Outdoor
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Requirements
Partial sun
Ideal
About 3-6 hours sunlight
Full sun, Full shade
Tolerance
Above 6 hours sunlight
Watch how sunlight gracefully moves through your garden, and choose spots that provide the perfect balance of light and shade for your plants, ensuring their happiness.
Essentials
Smooth hydrangea enjoys an environment where it receives moderate amounts of sun throughout the day. It has a degree of flexibility, able to withstand areas with more intense sunlight as well as locales with less light exposure. However, extremely sheltered or overly exposed conditions could hinder its growth, affecting its leaves and flowering process.
Preferred
Tolerable
Unsuitable
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Artificial lighting
Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
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Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
1. Choose the right type of artificial light: LED lights are a popular choice for indoor plant lighting because they can be customized to provide the specific wavelengths of light that your plants need.
Full sun plants need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants need 10-20W/sq ft.
2. Determine the appropriate distance: Place the light source 12-36 inches above the plant to mimic natural sunlight.
3. Determine the duration: Mimic the length of natural daylight hours for your plant species. most plants need 8-12 hours of light per day.
Important Symptoms
Symptoms of Insufficient Light in %s
Smooth hydrangea is a versatile plant that thrives in full sunlight but can tolerate partial shade. While it can adapt to different light conditions, when grown indoors with insufficient light, subtle symptoms of light deficiency may arise.
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Small leaves
New leaves may grow smaller in size compared to the previous ones once they have matured.
Leggy or sparse growth
The spaces between leaves or stems of your smooth hydrangea may become longer, resulting in a thin and stretched-out appearance. This can make the plant look sparse and weak, and it may easily break or lean due to its own weight.
Faster leaf drop
When plants are exposed to low light conditions, they tend to shed older leaves early to conserve resources. Within a limited time, these resources can be utilized to grow new leaves until the plant's energy reserves are depleted.
Slower or no new growth
Smooth hydrangea enters a survival mode when light conditions are poor, which leads to a halt in leaf production. As a result, the plant's growth becomes delayed or stops altogether.
Lighter-colored new leaves
Insufficient sunlight can cause leaves to develop irregular color patterns or appear pale. This indicates a lack of chlorophyll and essential nutrients.
Solutions
1. To optimize plant growth, shift them to increasingly sunnier spots each week until they receive 3-6 hours of direct sunlight daily, enabling gradual adaptation to changing light conditions.2. To provide additional light for your plant, consider using artificial light if it's large or not easily movable. Keep a desk or ceiling lamp on for at least 8 hours daily, or invest in professional plant grow lights for ample light.
Symptoms of Excessive light in %s
Smooth hydrangea thrives in full sun exposure but can adapt to partial shade. Although sunburn symptoms occur occasionally, they are generally tolerant of different light conditions due to their resilience.
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(Symptom details and solutions)
Chlorosis
Chlorosis is a condition where the plant's leaves lose their green color and turn yellow. This is due to the breakdown of chlorophyll from excessive sunlight, which negatively affects the plant's ability to photosynthesize.
Sunscald
Sunscald occurs when the plant's leaves or stems are damaged by intense sunlight exposure. It appears as pale, bleached, or necrotic areas on the plant tissue and can reduce the plant's overall health.
Leaf Curling
Leaf curling is a symptom where leaves curl or twist under extreme sunlight conditions. This is a defense mechanism used by the plant to reduce its surface area exposed to sunlight, minimizing water loss and damage.
Wilting
Wilting occurs when a plant loses turgor pressure and its leaves and stems begin to droop. Overexposure to sunlight can cause wilting by increasing the plant's water loss through transpiration, making it difficult for the plant to maintain adequate hydration.
Leaf Scorching
Leaf scorching is a symptom characterized by the appearance of brown, dry, and crispy edges or patches on leaves due to excessive sunlight. This can lead to a reduction in photosynthetic capacity and overall plant health.
Solutions
1. Move your plant to the optimal position where it can receive abundant sunlight but also have some shade. An east-facing window is an ideal choice as the morning sunlight is gentler. This way, your plant can enjoy ample sunlight while reducing the risk of sunburn.2. It is recommended to trim off any completely dehydrated or withered parts of the plant.
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Temperature
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Requirements
Ideal
Tolerable
Unsuitable
Just like people, each plant has its own preferences. Learn about your plants' temperature needs and create a comforting environment for them to flourish. As you care for your plants, your bond with them will deepen. Trust your intuition as you learn about their temperature needs, celebrating the journey you share. Lovingly monitor the temperature around your plants and adjust their environment as needed. A thermometer can be your ally in this heartfelt endeavor. Be patient and gentle with yourself as you explore your plants' temperature needs. Cherish your successes, learn from challenges, and nurture your garden with love, creating a haven that reflects the warmth of your care.
Essentials
The smooth hydrangea grows natively in areas with a temperate climate, and it prefers temperatures between 32 to 95 ℉ (0 to 35 ℃). In order to adjust to temperature changes in different seasons, it is recommended to plant the smooth hydrangea in a sheltered location during winter months and to provide mulch to keep the root system insulated.
Regional wintering strategies
Smooth hydrangea has strong cold resistance, so special frost protection measures are usually not necessary during winter. However, if the winter temperatures are expected to drop below {Limit_growth_temperature}, it is still important to provide cold protection. This can be achieved by wrapping the trunk and branches with materials such as non-woven fabric or cloth. Before the first freeze in autumn, it is recommended to water the plant abundantly, ensuring the soil remains moist and enters a frozen state. This helps prevent drought and water scarcity for the plant during winter and early spring.
Important Symptoms
Symptoms of Low Temperature in %s
Smooth hydrangea is cold-tolerant and thrives best when the temperature is above {Suitable_growth_temperature_min}. During winter, it should be kept above {Tolerable_growing_temperature_min}. When the temperature falls below {Limit_growth_temperature}, although there may not be any noticeable changes during winter, the branches may become brittle and dry during springtime, and no new shoots will emerge.
Solutions
In spring, prune away any dead branches that have failed to produce new leaves.
Symptoms of High Temperature in %s
During summer, Smooth hydrangea should be kept below {Suitable_growth_temperature_max}. When the temperature exceeds {Tolerable_growing_temperature_max}, the leaves of the plant may become lighter in color, the tips may become dry and withered, and the plant becomes more susceptible to sunburn.
Solutions
Trim away the sunburned and dried-up parts. Move the plant to a location that provides shade from the midday and afternoon sun, or use a shade cloth to create shade. Water the plant in the morning and evening to keep the soil moist.
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Transplant
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How to Successfully Transplant Smooth Hydrangea?
For smooth hydrangea, the best time to transplant is during the temperate months between mid-spring and early summer. Choose a location with partial to full sunlight and well-drained soil. Remember to water thoroughly after transplanting to establish strong roots.
What Preparations are Needed Before Transplanting Smooth Hydrangea?
What is the Ideal Time for Transplanting Smooth Hydrangea?
The best time to transplant smooth hydrangea is mid-spring to early summer, as this allows the plant to establish itself before colder months. Doing so offers improved root growth and vibrant blooms for a stunning garden addition.
How Much Space Should You Leave Between Smooth Hydrangea Plants?
For your smooth hydrangea plants, it's best to give them ample space to grow and thrive. Aim for a spacing of about 3-10 feet (0.9-3 meters) apart when transplanting to ensure healthy growth.
What is the Best Soil Mix for Smooth Hydrangea Transplanting?
Your smooth hydrangea plants will love a well-draining, loamy soil enriched with organic matter. Prepare the soil by mixing in some compost or well-aged manure to give your smooth hydrangea a great start!
Where Should You Relocate Your Smooth Hydrangea?
Choose a location for your smooth hydrangea where it can get at least 4 hours of sunlight daily, preferably in the morning. Partial shade in the afternoon can help protect your plants from intense heat.
What Equipments Should You Prepare Before Transplantation Smooth Hydrangea?
Gardening Gloves
To protect your hands while working with the soil and plant.
Shovel or Spade
For digging holes, lifting the plant, and transferring soil.
Compost or Organic Matter
To amend the planting hole for better root establishment.
Mulch
To help retain soil moisture and regulate temperature.
Watering Can or Hose
For watering your smooth hydrangea plant during and after transplanting.
Pruner
To trim back any damaged stems or branches after transplanting.
How Do You Remove Smooth Hydrangea from the Soil?
- From Ground: First, water the smooth hydrangea plant to dampen the soil. Then, dig a wide trench around the plant using a shovel or spade, ensuring the plant's root ball remains intact. Carefully work the spade under the root ball to lift the plant from its original location.
- From Pot: Water the smooth hydrangea well to dampen the soil. Gently turn the pot on its side, and carefully work the plant loose from the edges of the pot with your hand. Grasp the base of the stem/trunk and pull the plant out of the pot without disturbing the root ball.
- From Seedling Tray: Water your smooth hydrangea seedlings well, then use a small tool or your finger to loosen the soil around each seedling. Gently grasp the base of the stem and lift the seedling while supporting the root ball.
Step-by-Step Guide for Transplanting Smooth Hydrangea
Site Selection
Choose a location with appropriate sunlight and space for your smooth hydrangea plant to grow to its mature size.
Digging
Dig a hole twice as wide and just as deep as the root ball of your smooth hydrangea plant. This ensures the roots have enough space to spread out and establish themselves.
Soil Amendment
Add a layer of compost or organic matter to the bottom of the hole, about 1-2 inches thick. Mix this in with the native soil to promote better root growth.
Plant Placement
Gently lower the smooth hydrangea into the planting hole, making sure the plant is level with the surrounding soil. Do not bury the crown (where stems meet the roots) below soil level.
Filling the Hole
Carefully back-fill the hole with the amended soil mixture, pressing gently to remove any air pockets.
Watering
Thoroughly water the smooth hydrangea plant to settle the soil and help establish the roots.
Mulching
Apply a layer of mulch (about 2-3 inches thick) around the base of the smooth hydrangea, keeping the mulch a few inches away from the stem. This helps retain moisture and suppress weed growth.
How Do You Care For Smooth Hydrangea After Transplanting?
Watering
Keep the soil around the smooth hydrangea consistently moist, but not soggy, for the first few weeks after transplanting to help establish strong roots.
Pruning
Trim back any damaged or broken stems after transplanting to promote healthy growth.
Monitoring
Watch for signs of stress, such as wilting or yellowing leaves, and address potential issues promptly. Be patient, as it may take a few weeks for your smooth hydrangea to bounce back from transplanting shock.
Frost Protection
If transplanting late in the season, be prepared to protect your smooth hydrangea from frost or freezing temperatures with a frost cloth or other protective covering.
Troubleshooting Common Issues with Smooth Hydrangea Transplantation.
When is the best time to transplant smooth hydrangea?
The ideal time to transplant smooth hydrangea is from mid-spring to early summer, ensuring optimal growth and establishment.
What is the suggested spacing for transplanting smooth hydrangea?
Place smooth hydrangea plants at a distance of 3-10 feet (0.9-3 meters) apart, allowing them sufficient space to grow.
How do I prepare the soil for transplanting smooth hydrangea?
Before transplanting, work organic matter into the soil to a depth of 10 inches (25 cm), and ensure proper drainage.
What is the correct depth to transplant the smooth hydrangea?
Transplant smooth hydrangea at the same depth it was growing previously, ensuring the root ball is slightly below the surface.
How should I water smooth hydrangea after transplanting?
Water thoroughly after transplanting, then maintain consistent soil moisture without overwatering, and avoid letting it dry out.
Is it necessary to prune smooth hydrangea before transplanting?
Pruning before transplanting is beneficial, as it reduces stress, encourages branching and maintains an attractive shape.
How much sunlight does smooth hydrangea need after being transplanted?
Smooth hydrangea performs well in full sun to partial shade, with a preference for morning sun and afternoon shade.
Should I fertilize smooth hydrangea after transplanting?
Apply a balanced, slow-release fertilizer after transplanting, then annually in spring, following package instructions.
How do I ensure proper root establishment of smooth hydrangea?
Keep the area around smooth hydrangea free of weeds, apply a 2-inch (5 cm) layer of mulch, and water consistently.
How do I know if my smooth hydrangea transplant is successful?
A successful transplant will show new growth, healthy leaves, and vigorous blossoming after several weeks.
Discover care info about seasonal tips, plant diseases, and more?
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