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Basic Care
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FAQ

How to care Island Mallow

Island mallow (Malva assurgentiflora) is a perennial plant native to the Channel Islands in California. Island mallow is often grown in California as an ornamental species that is planted to break the wind. Attracts many types of butterflies, hummingbirds, and other birds.
Water
Water
Every week
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Sunlight
Full sun
Island mallow
Island mallow
Island mallow
Island mallow
Island mallow
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Basic Care Guide

Cultivation:WaterDetail

Water

The island mallow is a fairly drought-tolerant plant once fully established. Weekly watering is required only during its first year. After this, your watering regime can be reduced to once every 10-14 days. Alternatively, water an established island mallow only during its growth and flowering periods when the rain doesn't provide 2.5 cm of water a week. The more water you provide, the lusher the leaves will be.

Water

Potted Island mallow
If your plant is in a pot. The most precise way to decide whether your Island mallow needs water is to plunge your finger into the soil. If you notice that the first two to three inches of soil have become dry, it is time to add some water. When it comes time to water your Island mallow , you should not be shy about how much water you give. With the first two to three inches of soil dry, this plant will appreciate a long and thorough watering. Supply enough water to soak the soil entirely. The amount of water you add should be enough to cause excess water to flow through the drainage holes at the bottom of your pot. If you don’t see excess water draining from the pot, you have likely underwatered your plant. But do not let the water accumulate inside the soil, which will be very dangerous to the plant as well. Alternatively, a lack of water draining through the pot could indicate poorly draining soils, which is detrimental to the health of this plant and should be avoided.
The Island mallow plant will have its highest water needs during the hottest months of the year. During the height of summer, you may need to give this plant water more than once per week, depending on how fast the soil dries out. The opposite is true during the winter. In winter, your plant will enter a dormant phase, in which it will need far less water than usual. In fact, you may not need to water this plant at all during the winter months. However, if you do water during winter, you should not do so more than twice per month. Watering too much at this time will make it more likely that your Island mallow will contract a disease.
Ground Island mallow
If you grow your Island mallow outdoors in the ground, you can use a similar method to test the soil. Again, when you find that the first few inches of soil have dried out, it is time to add water. During the spring and early fall, this method will often lead you to water this plant about once every week. When extremely hot weather arrives, you may need to increase your watering frequency to about twice or more per week. With that said, mature, well-established Island mallow can show an admirable ability to withstand drought.
The water needs of the Island mallow can change depending on growth stages as well. For example, when your Island mallow is in the first few years of its life, or if you have just transplanted it to a new growing location, you will need to give more water than usual. During both of those stages, your Island mallow will put a lot of energy towards sprouting new roots that will then support future growth. For those roots to perform their best, they need a bit more moisture than they would at a more mature phase. After a few seasons, your Island mallow will need much less water. Another growth stage in which this plant may need more water is during the bloom period. Flower development can make use of a significant amount of moisture, which is why you might need to give your Island mallow more water at this time.
Overwater and underwater
Both overwatering and underwatering will be detrimental to the health of your Island mallow , but overwatering is a far more common issue. When this species receives too much water, its stems and leaves may begin to wilt and turn from green to yellow. Overwatering over a prolonged period may also lead to diseases such as root rot, mold, and mildew, all of which can kill your plant.
Underwatering is far less common for the Island mallow , as this plant has decent drought tolerance. However, underwatering remains a possibility, and when it occurs, you can expect to find that the leaves of your Island mallow have become brittle and brown.
It is crucial that you notice the signs of overwatering as soon as possible when caring for an Island mallow plant. Some of the diseases that arise from overwatering, such as root rot, may not be correctable if you wait too long. If you see early signs of overwatering, you should reduce your watering schedule immediately. You may also want to assess the quality of soil in which your Island mallow plant grows. If you find that the soil drains very poorly, you should replace it immediately with a loose, well-draining potting mix. On the other hand, if you find signs that your Island mallow is receiving too little water, all you need to do is water more regularly until those signs have subsided.
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Cultivation:WaterDetail
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What is the best way to water my Island mallow?
When watering the Island mallow, you should aim to use filtered water that is at room temperature. Filtered water is better for this plant, as tap water can contain particles that are harmful to its health. The reason that the water should be at room temperature or slightly warmer is that the Island mallow comes from a warm environment, and cold water can be somewhat of a shock to its system. Also, you should avoid overhead watering for this plant, as it can cause foliage complications. Instead, simply apply your filtered room temperature water to the soil until the soil is entirely soaked. Soaking the soil can be very beneficial for this plant as it moistens the roots and helps them continue to spread through the soil and collect the nutrients they need.
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What should I do if I water my Island mallow too much or too little?
Both overwatering and underwatering will be detrimental to the health of your Island mallow, but overwatering is a far more common issue. When this species receives too much water, its stems and leaves may begin to wilt and turn from green to yellow. Overwatering over a prolonged period may also lead to diseases such as root rot, mold, and mildew, all of which can kill your plant. Underwatering is far less common for the Island mallow, as this plant has decent drought tolerance. However, underwatering remains a possibility, and when it occurs, you can expect to find that the leaves of your Island mallow have become brittle and brown.
It is crucial that you notice the signs of overwatering as soon as possible when caring for your Island mallow. Some of the diseases that arise from overwatering, such as root rot, may not be correctable if you wait too long. If you see early signs of overwatering, you should reduce your watering schedule immediately. You may also want to assess the quality of soil in which your Island mallow grows. If you find that the soil drains very poorly, you should replace it immediately with a loose, well-draining potting mix. On the other hand, if you find signs that your Island mallow is receiving too little water, all you need to do is water more regularly until those signs have subsided.
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How often should I water my Island mallow?
If your plant is in a pot. The most precise way to decide whether your Island mallow needs water is to plunge your finger into the soil. If you notice that the first two to three inches of soil have become dry, it is time to add some water.
If you grow your Island mallow outdoors in the ground, you can use a similar method to test the soil. Again, when you find that the first few inches of soil have dried out, it is time to add water. During the spring and early fall, this method will often lead you to water this plant about once every week. When extremely hot weather arrives, you may need to increase your watering frequency to about twice or more per week. With that said, mature, well-established the Island mallow can show an admirable ability to withstand drought.
Read More more
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How much water does my Island mallow need?
When it comes time to water your Island mallow, you should not be shy about how much water you give. With the first two to three inches of soil dry, this plant will appreciate a long and thorough watering. Supply enough water to soak the soil entirely. The amount of water you add should be enough to cause excess water to flow through the drainage holes at the bottom of your pot. If you don’t see excess water draining from the pot, you have likely underwatered your plant. But do not let the water accumulate inside the soil, which will be very dangerous to the plant as well. Alternatively, a lack of water draining through the pot could indicate poorly draining soils, which is detrimental to the health of this plant and should be avoided. If the plant is outside, 1 inch of rain per week will be sufficient.
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How should I water my Island mallow at different growth stages?
The water needs of the Island mallow can change depending on growth stages as well. For example, when your Island mallow is in the first few years of its life, or if you have just transplanted it to a new growing location, you will need to give more water than usual. During both of those stages, your Island mallow will put a lot of energy towards sprouting new roots that will then support future growth. For those roots to perform their best, they need a bit more moisture than they would at a more mature phase. After a few seasons, your Island mallow will need much less water. Another growth stage in which this plant may need more water is during the bloom period. Flower development can make use of a significant amount of moisture, which is why you might need to give your Island mallow more water at this time.
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How should I water my Island mallow through the seasons?
The Island mallow will have its highest water needs during the hottest months of the year. During the height of summer, you may need to give this plant water more than once per week, depending on how fast the soil dries out. The opposite is true during the winter. In winter, your plant will enter a dormant phase, in which it will need far less water than usual. In fact, you may not need to water this plant at all during the winter months. However, if you do water during winter, you should not do so more than about once per month. Watering too much at this time will make it more likely that your Island mallow will contract a disease.
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What's the difference between watering my Island mallow indoors and outdoors?
It is most common to grow the Island mallow indoors for any gardener that does not live in temperate and tropical regions. Those gardeners should consider the fact that soil in a container can dry out a bit faster than ground soil. Also, the presence of drying elements such as air conditioning units can cause your Island mallow to need water on a more frequent basis as well. if you planted it outside. When that is the case, it’s likely you won’t need to water your Island mallow very much at all. If you receive rainfall on a regular basis, that may be enough to keep your plant alive. Alternatively, those who grow this plant inside will need to water it more often, as allowing rainwater to soak the soil will not be an option.
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Cultivation:FertilizerDetail

Fertilizer

The hardy island mallow will benefit greatly from an annual fertilizing. Feed with a quality, slow-release fertilizer in late winter or early spring. A well-balanced fertilizer, with an N:P:K ratio of 10:10:10, is a good choice. Water generously after fertilizing. Alternatively, a natural organic plant food can be added. You can also mix some organic compost into the soil when planting your island mallow to enrich it and regulate drainage.

Fertilizer

Island mallow is a lovely foliage plant that grows throughout hardiness zones 10, 11, and 12. However, many gardeners choose to grow this plant indoors to enliven their favorite indoor living spaces. While many plants can impress with their blooms, the Island mallow will catch your eye with its unique leaf shapes and textures. However, if you want your Island mallow to live its best life, you need to know how to take care of it. Part of your care routine should include proper fertilization. Below are a few answers to the most important questions about fertilizing a Island mallow.
All plants rely on soil nutrients to facilitate their growth, and the Island mallow is no exception. However, it is not always a guarantee that the soil in which your plants grow will have all of the nutrients required. Fertilization and soil amendments help ensure that the plants in your garden not only have the basic nutrients they need but also that they get the nutrients that are specifically necessary to them. Island mallow needs fertilizer to ensure that its roots and stems continue to develop in a healthy way throughout the growing season. Fertilization will also help a Island mallow a set of leaves that looks fantastic, which is especially important for this plant since its foliage is its main point of ornamental appeal.
A Island mallow will need the greatest amount of fertilizer during the seasons in which it is actively growing. This active growth phase typically spans most of the months that make up spring, summer, and early fall. Once winter ends, you should plan to feed your Island mallow about once every two to four weeks. Continue feeding at this rate until the fall months arrive. Once fall arrives, you can reduce your fertilization rate, reducing the amount of fertilizer you give gradually until you cease feedings entirely in anticipation of winter, when the Island mallow will have far less active growth.
The fertilizer for a Island mallow has a specific blend of nutrients, each of which is present in relatively low amounts. An ideal fertilizer will have an N-P-K ratio of 3-1-2. However, a general-purpose fertilizer that has an even blend of nutrients can work well in some cases. Still, even when using a balanced fertilizer, the ratio number representing the volume of each nutrient should be at 10 or lower. The fertilizer you use can be either granular or liquid based. If you choose to use a liquid-based fertilizer, it is often best to dilute the strength by half. While there is not much downside to granular fertilizer, it is often most sensible to use liquid fertilizer, especially if you feed your Island mallow while you supply water.
The fertilizer that you purchase for your Island mallow will likely come with application instructions that you should follow in most cases. However, for a Island mallow, you should always fertilize just before or while you are watering the soil, as this will prevent the fertilizer from burning the plant's roots. If you use a slow-release granular fertilizer, you should sprinkle it on the soil and then provide water immediately after. If you use a liquid-based fertilizer, you should dilute it with water, apply it to the soil, then supply a bit more water. Diluting your fertilizer by at least half is especially important in spring and fall when the plant's growth is ramping up and decelerating, respectively.
Since it is advisable to fertilize your Island mallow every few weeks throughout the growing season, overfertilization is not often an issue. However, it remains possible for this to occur. If you overfertilize your Island mallow, you may notice accumulations of excess fertilizer on the soil’s surface and foliage discoloration. Fertilizer burn is the most common issue you should worry about when feeding a Island mallow. This issue occurs when you overfertilize, fail to dilute your fertilizer, or when don’t water during and after fertilization. In any of those cases, the fertilizer can draw moisture out of your plant’s roots, causing it to dry out. Often, fertilizer burn will manifest with browning and yellowing of this plant’s leaves.
Throughout most of the year, including spring, summer, and most of the fall, you should continue feeding your Island mallow regularly. The only exception to this is if you notice that your Island mallow has received too much fertilizer or if you have managed to fertilize your Island mallow incorrectly, causing fertilizer burn or some other issue that you'll need to remedy before returning to a regular feeding schedule.
The only time of year when you should not fertilize a Island mallow is during winter. If you grow this plant indoors in an area where the winters are cold, it will enter a dormant phase during the winter. Feeding this plant during its dormant phase is not only unnecessary and unhelpful to this plant's growth, but it is also very likely to cause fertilizer burn.
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Cultivation:FertilizerDetail
Why do I need to fertilize my Island mallow?
All plants rely on soil nutrients to facilitate their growth, and the Island mallow is no exception. However, it is not always a guarantee that the soil in which your plants grow will have all of the nutrients required. Fertilization and soil amendments help ensure that the plants in your garden not only have the basic nutrients they need but also that they get the nutrients that are specifically necessary to them.
Island mallow needs fertilizer to ensure that its roots and stems continue to develop in a healthy way throughout the growing season. Fertilization will also help a Island mallow a set of leaves that looks fantastic, which is especially important for this plant since its foliage is its main point of ornamental appeal.
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When is the best time to fertilize my Island mallow?
A Island mallow will need the greatest amount of fertilizer during the seasons in which it is actively growing. This active growth phase typically spans most of the months that make up spring, summer, and early fall.
Once winter ends, you should plan to feed your Island mallow about once every two to four weeks. Continue feeding at this rate until the fall months arrive. Once fall arrives, you can reduce your fertilization rate, reducing the amount of fertilizer you give gradually until you cease feedings entirely in anticipation of winter, when the Island mallow will have far less active growth.
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When should I avoid fertilizing my Island mallow?
Throughout most of the year, including spring, summer, and most of the fall, you should continue feeding your Island mallow regularly. The only exception to this is if you notice that your Island mallow has received too much fertilizer or if you have managed to fertilize your Island mallow incorrectly, causing fertilizer burn or some other issue that you'll need to remedy before returning to a regular feeding schedule.
The only time of year when you should not fertilize a Island mallow is during winter. If you grow this plant indoors in an area where the winters are cold, it will enter a dormant phase during the winter. Feeding this plant during its dormant phase is not only unnecessary and unhelpful to this plant's growth, but it is also very likely to cause fertilizer burn.
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What type of fertilizer does my Island mallow need?
The fertilizer for a Island mallow has a specific blend of nutrients, each of which is present in relatively low amounts. An ideal fertilizer will have an N-P-K ratio of 3-1-2. However, a general-purpose fertilizer that has an even blend of nutrients can work well in some cases. Still, even when using a balanced fertilizer, the ratio number representing the volume of each nutrient should be at 10 or lower.
The fertilizer you use can be either granular or liquid based. If you choose to use a liquid-based fertilizer, it is often best to dilute the strength by half. While there is not much downside to granular fertilizer, it is often most sensible to use liquid fertilizer, especially if you feed your Island mallow while you supply water.
Read More more
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How do I fertilize my Island mallow?
The fertilizer that you purchase for your Island mallow will likely come with application instructions that you should follow in most cases. However, for a Island mallow, you should always fertilize just before or while you are watering the soil, as this will prevent the fertilizer from burning the plant's roots.
If you use a slow-release granular fertilizer, you should sprinkle it on the soil and then provide water immediately after. If you use a liquid-based fertilizer, you should dilute it with water, apply it to the soil, then supply a bit more water. Diluting your fertilizer by at least half is especially important in spring and fall when the plant's growth is ramping up and decelerating, respectively.
Read More more
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What happens if I fertilize my Island mallow too much?
Since it is advisable to fertilize your Island mallow every few weeks throughout the growing season, overfertilization is not often an issue. However, it remains possible for this to occur. If you overfertilize your Island mallow, you may notice accumulations of excess fertilizer on the soil’s surface and foliage discoloration.
Fertilizer burn is the most common issue you should worry about when feeding a Island mallow. This issue occurs when you overfertilize, fail to dilute your fertilizer, or when don’t water during and after fertilization. In any of those cases, the fertilizer can draw moisture out of your plant’s roots, causing it to dry out. Often, fertilizer burn will manifest with browning and yellowing of this plant’s leaves.
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Cultivation:SunlightDetail

Sunlight

The island mallow generally requires full sun exposure. It may thrive under partial shade, but this will negatively reflect on its blooms. A plant that is shaded will produce fewer flowers, so try to provide at least six hours of full sun a day. If provided with enough sunlight, your island mallow will not need to be staked.
Cultivation:SunlightDetail
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Cultivation:PruningDetail

Pruning

The island mallow, especially the bushier varieties, benefits from occasional pruning. Trimming should be done in late winter or early spring when the frosts have passed. If freshly pruned plant tissue is exposed to freezing temperatures, it can be damaged by frostbite. Trim the shoots down to the first set of leaves, which will stimulate new and healthy dense growth. Use clean, sharp shears and always disinfect your tools in between the cuts to reduce the chances of possible cross-contamination.
Cultivation:PruningDetail
Is pruning necessary for my Island mallow?
It is helpful to lightly prune this plant periodically during the spring and summer. When performing this light pruning, you should search for leaves that have wilted, become discolored, show signs of disease, or have died completely. Remove dead or damaged leaves by cutting their petioles, or trimming off stems that have died. This will increase the light and ventilation of the plant and help it to grow. Some gardeners also choose to remove the flower buds of the Island mallow. However, removing flower buds before they open is a strictly aesthetic decision that will emphasize the beauty of this plant’s showy leaves.
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When should I prune my Island mallow?
You can prune your Island mallow any time you notice dead, diseased, or damaged leaves during the growing season. Once you notice such a leave, locate an unwanted leaf, then follow its stem all the way to the bottom of petiole. Removing dead stems will increase the light and ventilation of the plant and help it to grow. you can cut its stem just above the soil’s surface to remove it. Such pruning can take place as needed during spring and summer. Also, this plant can bloom any time between spring and fall, and some gardeners choose to remove flower buds before they have a chance to open. Removing unopened flower buds allows this plant to focus most of its growing energy on its beautiful leaves. However, pruning in this manner does not necessarily influence the plant’s overall health.
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How do I prune my Island mallow?
Pruning the Island mallow is as easy as waiting until you notice dead or damaged leaves on your plant. When you recognize these leaves, equip yourself with a pair of sharp and sterile hand pruning shears. Hand pruning shears will work best as larger tools like loppers will not be well suited to the precise cuts you need to make. Once you have a proper set of pruning tools, locate an unwanted leaf, then follow its stem all the way to the bottom of petiole. Removing dead stems will increase the light and ventilation of the plant and help it to grow. Cut the stem just above where it exits the soil to remove it entirely. If you wish to stop this plant from flowering, you can use the same pruning shears to remove any buds before they open. Finally, you may prefer to just trim off dead or damaged portions of the plant, including deadheading spent flowers, to keep it looking its best. This can be done at any time of year. Diseased or damaged stems should be cut right at the soil line and removed completely. Blooms should be cut off just below the flower head.
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What should I do after pruning my Island mallow?
Since pruning for the Island mallow should take place periodically throughout the season, what you do after pruning can vary. For instance, if you prune to remove selected leaves and stems from your Island mallow, you won’t need to do anything except continue your regular maintenance routine. At times, you may choose to remove healthier leaves and include them in a display of cut flowers and foliage. However, there is no crucial maintenance task to perform for this plant after typical pruning. The only thing to note is that when watering after pruning, you need to be careful not to touch the wound to prevent fungus from infecting the plant through the fresh wound. Placing Island mallow in a well-ventilated location will also help the wounds to dry out and heal in time. The timely replenishment of Island mallow after pruning will help the Island mallow to recover as soon as possible.
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Are there any important tips when pruning my Island mallow?
For your major pruning, use sharp pruning sheers that will make clean cuts to avoid damaging your plants. As you are pruning your Island mallow, step back occasionally to check the appearance of the plant to make sure it has the shape you want and that you are pruning it symmetrically. If the overall growth of the plant is weak, the flowers need to be pruned back in time for flowering to be able to save nutrients for leaf growth and allow the plant to grow more vigorously.
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Advanced Care Guide

Cultivation:WaterAndHardinessDetail

Temperature

The island mallow can grow under a broad range of temperature conditions, with bushier varieties usually able to handle warmer temperatures. this is a hardy plant, able to withstand a winter that drops down to -40 ℃. Some varieties, like the Tree island mallow, can handle drought well once established, and will burst back into life when the rains return.
Cultivation:WaterAndHardinessDetail
What is the optimal temperature for Island mallow?
For this tropical plant to thrive, you’ll want to keep them between 75℉ and 90℉ (25-32℃). Each species can handle temperatures outside of this range, but keeping it within several degrees of these limits will ensure they grow to their maximum potential.
As for its extreme temperature limits, any environment below 50℉ (10℃) or above 95℉ (35℃) will begin to hinder its growth and cause various aberrations to its leaves and stems. This is especially true with low temperatures; even a light frost can cause your tropical plants to perish. Cellular death can begin to happen at a rapid pace, with some species dying in as little as 12 to 24 hours.
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Does Island mallow require different temperatures for different growing phases?
While Island mallow doesn’t require any changes in temperature to enter different growing phases, it is important to stay consistent. Wild temperature fluctuations can slow down its growth regardless of its current phase, so it's always better to keep them in a controlled environment. That optimal temperature range of 75℉ and 90℉ (25-32℃) is vital to maintain, especially staying above the lower limit. Going above 90℉(32℃) isn’t ideal, but as tropical plant it won’t suffer too much. On the other hand, going below 50℉ (10℃) (and especially 40℉/5℃) will begin to directly damage this heat-loving plant species.
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Does Island mallow need different temperatures for different seasons?
Island mallow does not need different temperatures for different growing seasons. The most important step in seasonal care is to keep the environment within the optimal temperature range. That's why it's always best to keep this plant indoors. That way, you can control the temperature no matter what the climate is like outside.
Light is also important for tropical species, with all of these plants preferring a partial side level of sun exposure. This means any light they receive needs to be dappled or filtered, with bright but indirect light being the best option when growing your plants indoors. Too much direct sunlight can negatively affect your plant’s leaves, reducing its growth potential.
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What are the temperature guidelines to keep your Island mallow healthy?
Tip #1: Don’t Leave Your Plant Near Windows in Colder Months
If you want to make sure your plant isn’t exposed to colder temperatures, you may want to keep them away from windows. In colder months like late fall and winter, even the smallest draft can leak cold air into your home through cracks in your windows. While this air usually dissipates and warms up as it travels throughout your home, any plants placed in close proximity to the window will be affected. Move your tropical plants into an area where they will still get bright but indirect light, while making sure they won’t be affected by potential drafts.
Tip #2: If You Find Dry Patches, Your Plant May Be Getting Too Much Sunlight or Heat
You may notice the leaves become white or even scorched on a sunny day. These discolorations and unusual markings usually indicate that a plant is getting too much heat or sunlight, and it may be dehydrated. Excess light and heat will dry out the soil, stopping plants from getting the moisture they need to support their cellular structure. It also slows down or stops the process of photosynthesis, further hindering growth. If ignored for too long, these dry spots can spread and eventually result in the death of your plants.
Tip #3: Avoid Frost at All Costs
Colder temperatures and frost can damage your plants by causing ice crystals or disrupt normal physiological activity. This makes it nearly impossible for water to move freely throughout plant tissue, creating a deficit of moisture in their stems and leaves. You can tell a plant has been damaged by frost if it begins to suffer from hydrosis (it will appear as though it's soaked with water.) If the problem persists, your plants may begin shriveling and turning a dark brown or black hue. After that, the plant will almost certainly die.
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What is the best way to maintain the right temperature for my Island mallow?
The best way to maintain the right temperature range for Island mallow is by keeping an eye on both the climate and humidity. You’ll want to try to keep each species in a room where you have access to climate control, keeping the heat in the temperature range best mimics its natural habitat. The humidity levels will also have a direct effect on temperature, so it's important to monitor these as well. You can artificially raise the humidity of your growing space by using a humidifier or lightly misting the leaves with water.
If you intend to grow this species outside, you may find it difficult to maintain the right balance of temperature and humidity. If temperatures begin to drop or the air becomes too dry, your best option is to find room within your home and move your plant inside. An indoor growing space will allow you to control the climate more closely, helping your plant reach its full potential.
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Cultivation:SoilDetail

Soil

The island mallow is not picky about its growing substrate. It can handle both clay and sandy soils and will adapt to most gardens. It doesn't necessarily require rich organic soils, and fertilizers are not a must. It will grow in neutral soil, but most will thrive if the soil pH is around 7.0.
Cultivation:SoilDetail
Cultivation:PlantingDetail

Planting

plant your island mallow in late summer or early fall. If planting in pots or in the garden, mix in some organic compost to regulate water retention. The island mallow is easily grown from seed. Choose a location that provides well-draining but moist soil and full sun. Sow shallow, cover the seed with a light soil layer, and keep the substrate constantly moist until germination. Pinch back new-growth tips when they reach about 30 cm to stimulate more compact growth.
Cultivation:PlantingDetail
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Seasonal Care Tips

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Summer

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Fall

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Winter

Your plant and other tropical herbs may require more frequent watering in the summer.

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1
Check the soil weekly to see if it is drying out.
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2
Continue feeding the plant monthly with an all-purpose fertilizer.
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3
Remove any dead or yellowing leaves and keep the plant out of direct sunlight to avoid burning the foliage.
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4
Check the plant and surrounding area for pests. Gardeners also want to check the leaves and stem for any signs of disease.
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5
New growth can be removed from the parent plant for propagation. Place the cutting in water and replant when roots appear.

As your plant continues growing through the fall, continue your care of this plant.

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1
Fertilize it on a monthly basis with an all-purpose fertilizer
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Make sure the soil is kept moist through regular watering, giving the plant water whenever the soil becomes dry.
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You can take cuttings and propagate more plants during this season as well, repotting fresh-cut stems and letting them grow.
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4
Give your plant plenty of indirect light, which will continue to encourage growth throughout the season.
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However, you must watch out for pests and other diseases, as with all other seasons of growth.

This plant needs only minimal care during these cold winter months.

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At this time, provide less water and reduce or stop fertilization.
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The plant will require no extra pruning, but will require strong indirect sunlight, so ensure it’s placed in an ideal location to keep the plant thriving and ready for spring.
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It's best to ensure the plant isn't exposed to freezing temperatures and kept in warm indoor rooms. Otherwise, you can leave this plant alone until the weather warms up and the plant awakens.
care_pet_and_diseases

Common Pests & Diseases

Common issues for Island mallow based on 10 million real cases
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.
Brown spot
Brown spot Brown spot
Brown spot
This infection can cause brown spots or patches to appear on the plant.
Solutions: In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary. Organic options won’t kill the fungus, but will prevent it from spreading. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Caterpillars
Caterpillars Caterpillars
Caterpillars
Caterpillars are fleshy moth or butterfly larvae that come in an array of colors, patterns, and even hairstyles. They chew on leaves and flower petals, creating large, irregular holes.
Solutions: Even though caterpillars are diverse, they all chew on plant parts and can cause significant damage if present in large numbers. For severe cases: Apply insecticide. For an organic solution, spray plants with a Bacillus thuringiensis (Bt), which specifically affects the larval stage of moths and butterflies. Be sure to coat plants, since caterpillars need to ingest Bt for it to be effective. This will not harm other insects. Spray a chili extract. Chili seeds can be cooked in water to make a spicy spray that caterpillars don't like. Spray this mixture on the plants, but be aware it will also be spicy to humans. Introduce beneficial insects. Release beneficial insects to the garden that eat caterpillars, such as parasitic wasps. For less severe cases: Hand pick. Using gloves, pick off caterpillars on plants and dispose of them in a bucket of soapy water. Dust plants with diatomaceous earth. This powder is harmless to humans but irritates caterpillars. Therefore, it will make it difficult for caterpillars to move and eat.
Aged yellow and dry
Aged yellow and dry Aged yellow and dry
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
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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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Brown spot
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Brown spot
This infection can cause brown spots or patches to appear on the plant.
Overview
Overview
Discolored spots on the foliage of plants are one of the most common disease problems people observe. These spots are caused by fungal and bacterial diseases, with most infections related to a fungal pathogen.
Brown spot can occurs on all houseplants, flowering ornamentals, vegetable plants, and leaves of trees, bushes, and shrubs. No plants are resistant to it, and the problem is worse in warm, wet environments. It can occur at any point in the life stage as long as leaves are present.
Small brownish spots appear on the foliage and enlarge as the disease progresses. In severe cases, the plant or tree is weakened when the lesions interrupt photosynthesis or cause defoliation.
Symptom Analysis
Symptom Analysis
In most cases, brown spot only affects a small percentage of the whole plant, appearing on a small amount of the leaves. A small infection only puts minor stress on the plant. However, if left untreated and the disease progresses over numerous seasons, it will severely impact the health and productivity of the infected specimen.
  • Sporulation begins (reproduction of the fungal spores), and tiny spots appear on leaves.
  • Placement is often random and scattered as diseases are spread through raindrops.
  • May appear on lower leaves and the interior of the plant where humidity is higher.
  • Brown spots enlarge and grow large enough to touch neighboring spots to form a more prominent blotch.
  • Leaf margins may turn yellow.
  • Tiny black dots (fruiting bodies of the fungi) appear in the dead spots.
  • Blotches grow in size until the entire leaf is brown.
  • The leaf falls off the plant.
Severe Symptoms
  • Partial or complete premature defoliation
  • Reduced growth
  • Increased susceptibility to pests and other diseases
Disease Cause
Disease Cause
Brown spot, or leaf spot, is a common descriptive term given to several diseases affecting the leaves of plants and trees. Around 85% of diseases exhibiting leaf spots are due to fungus or fungus-like organisms. Sometimes brown spot is caused by a bacterial infection, or insect activity with similar symptoms.
When conditions are warm and the leaf surfaces are wet, fungal spores being transported by wind or rain land on the surface and cling to it. They do not rupture the cell walls but grow in the space between the plant plasma membrane and the plant cell wall. As the spores reproduce, they release toxins and enzymes that cause necrotic spots (i.e., dead tissue) on the leaves, allowing the fungi to consume the products released when the cells degrade.
Solutions
Solutions
In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary.
Organic options won’t kill the fungus, but will prevent it from spreading.
  1. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear.
  2. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread.
  3. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Prevention
Prevention
Like many other diseases, it is easier to prevent brown spot than cure it, and this is done through cultural practices.
  • Clear fall leaves from the ground before winter to minimize places where fungi and bacteria can overwinter.
  • Maintain good air movement between plants through proper plant spacing.
  • Increase air circulation through the center of plants through pruning.
  • Thoroughly clean all pruning tools after working with diseased plants.
  • Never dispose of disease plant material in a compost pile.
  • Avoid overhead watering to keep moisture off of the foliage.
  • Keep plants healthy by providing adequate sunlight, water, and fertilizer.
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Caterpillars
plant poor
Caterpillars
Caterpillars are fleshy moth or butterfly larvae that come in an array of colors, patterns, and even hairstyles. They chew on leaves and flower petals, creating large, irregular holes.
Overview
Overview
Caterpillars can cause problems for home gardeners. If not managed, these insects can defoliate a plant in just a matter of days. However, home gardeners face a challenge because these caterpillars eventually turn into beautiful butterflies and moths, which are important for pollination and the general ecosystem.
There are thousands of different species of caterpillars and many will only target certain plants. If caterpillars are posing a problem, they can be removed by hand, or gardeners can use insect-proof netting to protect their valuable plants.
Symptom Analysis
Symptom Analysis
Caterpillars are the larvae of butterflies and moths. During the warmer months, butterflies and moths that visit gardens will lay their eggs on the underside of leaves.
When the tiny eggs hatch, the young larvae emerge and start feeding on the leaves of the plant. Depending on how many larvae have hatched, they can easily defoliate the plant in a very short period of time. Caterpillars will shed their skin as they grow, around 4 or 5 times during this feeding cycle.
Symptoms of caterpillars eating plants appear as holes in the leaves. The edges of the leaves may be eaten away as well, and flowers can be affected as well.
Some are easy to see, but others need to be searched for. This is because their bodies are often camouflaged to look like part of the plant. Gardeners need to look carefully along the stems of the plant as well as under the leaves. Also, look for tiny white, yellow, or brown eggs that can be found in groups on the underside of leaves.
Once the caterpillar is fully grown, it transforms into a pupa or chrysalis. Then, after a period of time that varies according to the species, a butterfly or moth will emerge from the pupa and the cycle begins again.
Solutions
Solutions
Even though caterpillars are diverse, they all chew on plant parts and can cause significant damage if present in large numbers.
For severe cases:
  1. Apply insecticide. For an organic solution, spray plants with a Bacillus thuringiensis (Bt), which specifically affects the larval stage of moths and butterflies. Be sure to coat plants, since caterpillars need to ingest Bt for it to be effective. This will not harm other insects.
  2. Spray a chili extract. Chili seeds can be cooked in water to make a spicy spray that caterpillars don't like. Spray this mixture on the plants, but be aware it will also be spicy to humans.
  3. Introduce beneficial insects. Release beneficial insects to the garden that eat caterpillars, such as parasitic wasps.
For less severe cases:
  1. Hand pick. Using gloves, pick off caterpillars on plants and dispose of them in a bucket of soapy water.
  2. Dust plants with diatomaceous earth. This powder is harmless to humans but irritates caterpillars. Therefore, it will make it difficult for caterpillars to move and eat.
Prevention
Prevention
Prevention may require less effort than attempts to eradicate infestations that have already begun. Here are our top steps for prevention:
  1. Monitor plants. Check plants regularly for caterpillar eggs on leaves. If they do not belong to an endangered species, they should be squished.
  2. Use insect netting. Cover plants with insect netting to prevent butterflies and moths from laying eggs on plants.
  3. Apply diatomaceous earth. Apply DE to plants early in the season and reapply after rain.
  4. Encourage plant diversity. This will attract predatory insects including parasitic wasps.
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Aged yellow and dry
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Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
Solutions
Solutions
If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Prevention
Prevention
Unfortunately, there is no way to prevent plants from dying of “old age.” To help prolong their life, and put off symptoms of aged yellow and dry for as long as possible, take care of them by giving them enough water, fertilizing them appropriately, and making sure they get enough sunlight.
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More About Island Mallow

Plant Type
Plant Type
Herb, Shrub
Lifespan
Lifespan
Perennial
Spread
Spread
3 to 6 m
Bloom Time
Bloom Time
Spring, Summer, Fall
Flower Size
Flower Size
2.5 to 5 cm
Plant Height
Plant Height
1 to 4 m
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Common Problems

My common island mallow is turning brown. Why is this happening?

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this is probably the result of heat stress. Even though the island mallow is relatively drought-tolerant, prolonged hot periods may damage it. Prune back the dying stems to the first flower row and water generously.

My island mallow has yellowing leaves and only a few blooms, what can I do?

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It sounds like your island mallow is lacking in sunlight. Remember that the island mallow needs full sun exposure and at least six hours of it. If possible, move the plant to a more suitable position and mix in some organic compost with the soil, to give it a little boost and help it to regain its vigor.
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Island mallow
Island mallow
Island mallow
Island mallow
Island mallow

How to care Island Mallow

Island mallow (Malva assurgentiflora) is a perennial plant native to the Channel Islands in California. Island mallow is often grown in California as an ornamental species that is planted to break the wind. Attracts many types of butterflies, hummingbirds, and other birds.
Water
Water
Every week
Sunlight
Sunlight
Full sun
care_basic_guide

Basic Care Guide

Cultivation:WaterDetail

Water

Cultivation:WaterDetail
The island mallow is a fairly drought-tolerant plant once fully established. Weekly watering is required only during its first year. After this, your watering regime can be reduced to once every 10-14 days. Alternatively, water an established island mallow only during its growth and flowering periods when the rain doesn't provide 2.5 cm of water a week. The more water you provide, the lusher the leaves will be.
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Water

Potted Island mallow
If your plant is in a pot. The most precise way to decide whether your Island mallow needs water is to plunge your finger into the soil. If you notice that the first two to three inches of soil have become dry, it is time to add some water. When it comes time to water your Island mallow , you should not be shy about how much water you give. With the first two to three inches of soil dry, this plant will appreciate a long and thorough watering. Supply enough water to soak the soil entirely. The amount of water you add should be enough to cause excess water to flow through the drainage holes at the bottom of your pot. If you don’t see excess water draining from the pot, you have likely underwatered your plant. But do not let the water accumulate inside the soil, which will be very dangerous to the plant as well. Alternatively, a lack of water draining through the pot could indicate poorly draining soils, which is detrimental to the health of this plant and should be avoided.
The Island mallow plant will have its highest water needs during the hottest months of the year. During the height of summer, you may need to give this plant water more than once per week, depending on how fast the soil dries out. The opposite is true during the winter. In winter, your plant will enter a dormant phase, in which it will need far less water than usual. In fact, you may not need to water this plant at all during the winter months. However, if you do water during winter, you should not do so more than twice per month. Watering too much at this time will make it more likely that your Island mallow will contract a disease.
Ground Island mallow
If you grow your Island mallow outdoors in the ground, you can use a similar method to test the soil. Again, when you find that the first few inches of soil have dried out, it is time to add water. During the spring and early fall, this method will often lead you to water this plant about once every week. When extremely hot weather arrives, you may need to increase your watering frequency to about twice or more per week. With that said, mature, well-established Island mallow can show an admirable ability to withstand drought.
The water needs of the Island mallow can change depending on growth stages as well. For example, when your Island mallow is in the first few years of its life, or if you have just transplanted it to a new growing location, you will need to give more water than usual. During both of those stages, your Island mallow will put a lot of energy towards sprouting new roots that will then support future growth. For those roots to perform their best, they need a bit more moisture than they would at a more mature phase. After a few seasons, your Island mallow will need much less water. Another growth stage in which this plant may need more water is during the bloom period. Flower development can make use of a significant amount of moisture, which is why you might need to give your Island mallow more water at this time.
Overwater and underwater
Both overwatering and underwatering will be detrimental to the health of your Island mallow , but overwatering is a far more common issue. When this species receives too much water, its stems and leaves may begin to wilt and turn from green to yellow. Overwatering over a prolonged period may also lead to diseases such as root rot, mold, and mildew, all of which can kill your plant.
Underwatering is far less common for the Island mallow , as this plant has decent drought tolerance. However, underwatering remains a possibility, and when it occurs, you can expect to find that the leaves of your Island mallow have become brittle and brown.
It is crucial that you notice the signs of overwatering as soon as possible when caring for an Island mallow plant. Some of the diseases that arise from overwatering, such as root rot, may not be correctable if you wait too long. If you see early signs of overwatering, you should reduce your watering schedule immediately. You may also want to assess the quality of soil in which your Island mallow plant grows. If you find that the soil drains very poorly, you should replace it immediately with a loose, well-draining potting mix. On the other hand, if you find signs that your Island mallow is receiving too little water, all you need to do is water more regularly until those signs have subsided.
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Cultivation:FertilizerDetail

Fertilizer

Cultivation:FertilizerDetail
The hardy island mallow will benefit greatly from an annual fertilizing. Feed with a quality, slow-release fertilizer in late winter or early spring. A well-balanced fertilizer, with an N:P:K ratio of 10:10:10, is a good choice. Water generously after fertilizing. Alternatively, a natural organic plant food can be added. You can also mix some organic compost into the soil when planting your island mallow to enrich it and regulate drainage.
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Fertilizer

Island mallow is a lovely foliage plant that grows throughout hardiness zones 10, 11, and 12. However, many gardeners choose to grow this plant indoors to enliven their favorite indoor living spaces. While many plants can impress with their blooms, the Island mallow will catch your eye with its unique leaf shapes and textures. However, if you want your Island mallow to live its best life, you need to know how to take care of it. Part of your care routine should include proper fertilization. Below are a few answers to the most important questions about fertilizing a Island mallow.
All plants rely on soil nutrients to facilitate their growth, and the Island mallow is no exception. However, it is not always a guarantee that the soil in which your plants grow will have all of the nutrients required. Fertilization and soil amendments help ensure that the plants in your garden not only have the basic nutrients they need but also that they get the nutrients that are specifically necessary to them. Island mallow needs fertilizer to ensure that its roots and stems continue to develop in a healthy way throughout the growing season. Fertilization will also help a Island mallow a set of leaves that looks fantastic, which is especially important for this plant since its foliage is its main point of ornamental appeal.
A Island mallow will need the greatest amount of fertilizer during the seasons in which it is actively growing. This active growth phase typically spans most of the months that make up spring, summer, and early fall. Once winter ends, you should plan to feed your Island mallow about once every two to four weeks. Continue feeding at this rate until the fall months arrive. Once fall arrives, you can reduce your fertilization rate, reducing the amount of fertilizer you give gradually until you cease feedings entirely in anticipation of winter, when the Island mallow will have far less active growth.
The fertilizer for a Island mallow has a specific blend of nutrients, each of which is present in relatively low amounts. An ideal fertilizer will have an N-P-K ratio of 3-1-2. However, a general-purpose fertilizer that has an even blend of nutrients can work well in some cases. Still, even when using a balanced fertilizer, the ratio number representing the volume of each nutrient should be at 10 or lower. The fertilizer you use can be either granular or liquid based. If you choose to use a liquid-based fertilizer, it is often best to dilute the strength by half. While there is not much downside to granular fertilizer, it is often most sensible to use liquid fertilizer, especially if you feed your Island mallow while you supply water.
The fertilizer that you purchase for your Island mallow will likely come with application instructions that you should follow in most cases. However, for a Island mallow, you should always fertilize just before or while you are watering the soil, as this will prevent the fertilizer from burning the plant's roots. If you use a slow-release granular fertilizer, you should sprinkle it on the soil and then provide water immediately after. If you use a liquid-based fertilizer, you should dilute it with water, apply it to the soil, then supply a bit more water. Diluting your fertilizer by at least half is especially important in spring and fall when the plant's growth is ramping up and decelerating, respectively.
Since it is advisable to fertilize your Island mallow every few weeks throughout the growing season, overfertilization is not often an issue. However, it remains possible for this to occur. If you overfertilize your Island mallow, you may notice accumulations of excess fertilizer on the soil’s surface and foliage discoloration. Fertilizer burn is the most common issue you should worry about when feeding a Island mallow. This issue occurs when you overfertilize, fail to dilute your fertilizer, or when don’t water during and after fertilization. In any of those cases, the fertilizer can draw moisture out of your plant’s roots, causing it to dry out. Often, fertilizer burn will manifest with browning and yellowing of this plant’s leaves.
Throughout most of the year, including spring, summer, and most of the fall, you should continue feeding your Island mallow regularly. The only exception to this is if you notice that your Island mallow has received too much fertilizer or if you have managed to fertilize your Island mallow incorrectly, causing fertilizer burn or some other issue that you'll need to remedy before returning to a regular feeding schedule.
The only time of year when you should not fertilize a Island mallow is during winter. If you grow this plant indoors in an area where the winters are cold, it will enter a dormant phase during the winter. Feeding this plant during its dormant phase is not only unnecessary and unhelpful to this plant's growth, but it is also very likely to cause fertilizer burn.
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Cultivation:SunlightDetail

Sunlight

Cultivation:SunlightDetail
The island mallow generally requires full sun exposure. It may thrive under partial shade, but this will negatively reflect on its blooms. A plant that is shaded will produce fewer flowers, so try to provide at least six hours of full sun a day. If provided with enough sunlight, your island mallow will not need to be staked.
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Cultivation:PruningDetail

Pruning

Cultivation:PruningDetail
The island mallow, especially the bushier varieties, benefits from occasional pruning. Trimming should be done in late winter or early spring when the frosts have passed. If freshly pruned plant tissue is exposed to freezing temperatures, it can be damaged by frostbite. Trim the shoots down to the first set of leaves, which will stimulate new and healthy dense growth. Use clean, sharp shears and always disinfect your tools in between the cuts to reduce the chances of possible cross-contamination.
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Advanced Care Guide

Cultivation:WaterAndHardinessDetail

Temperature

Cultivation:WaterAndHardinessDetail
The island mallow can grow under a broad range of temperature conditions, with bushier varieties usually able to handle warmer temperatures. this is a hardy plant, able to withstand a winter that drops down to -40 ℃. Some varieties, like the Tree island mallow, can handle drought well once established, and will burst back into life when the rains return.
What is the optimal temperature for Island mallow?
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Does Island mallow require different temperatures for different growing phases?
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Does Island mallow need different temperatures for different seasons?
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What are the temperature guidelines to keep your Island mallow healthy?
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Cultivation:SoilDetail

Soil

Cultivation:SoilDetail
The island mallow is not picky about its growing substrate. It can handle both clay and sandy soils and will adapt to most gardens. It doesn't necessarily require rich organic soils, and fertilizers are not a must. It will grow in neutral soil, but most will thrive if the soil pH is around 7.0.
Cultivation:PlantingDetail

Planting

Cultivation:PlantingDetail
plant your island mallow in late summer or early fall. If planting in pots or in the garden, mix in some organic compost to regulate water retention. The island mallow is easily grown from seed. Choose a location that provides well-draining but moist soil and full sun. Sow shallow, cover the seed with a light soil layer, and keep the substrate constantly moist until germination. Pinch back new-growth tips when they reach about 30 cm to stimulate more compact growth.
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Seasonal Care Tips

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Summer

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Fall

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Winter

Your plant and other tropical herbs may require more frequent watering in the summer.

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1
Check the soil weekly to see if it is drying out.
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2
Continue feeding the plant monthly with an all-purpose fertilizer.
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3
Remove any dead or yellowing leaves and keep the plant out of direct sunlight to avoid burning the foliage.
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4
Check the plant and surrounding area for pests. Gardeners also want to check the leaves and stem for any signs of disease.
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5
New growth can be removed from the parent plant for propagation. Place the cutting in water and replant when roots appear.

As your plant continues growing through the fall, continue your care of this plant.

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1
Fertilize it on a monthly basis with an all-purpose fertilizer
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2
Make sure the soil is kept moist through regular watering, giving the plant water whenever the soil becomes dry.
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3
You can take cuttings and propagate more plants during this season as well, repotting fresh-cut stems and letting them grow.
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4
Give your plant plenty of indirect light, which will continue to encourage growth throughout the season.
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5
However, you must watch out for pests and other diseases, as with all other seasons of growth.

This plant needs only minimal care during these cold winter months.

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1
At this time, provide less water and reduce or stop fertilization.
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The plant will require no extra pruning, but will require strong indirect sunlight, so ensure it’s placed in an ideal location to keep the plant thriving and ready for spring.
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3
It's best to ensure the plant isn't exposed to freezing temperatures and kept in warm indoor rooms. Otherwise, you can leave this plant alone until the weather warms up and the plant awakens.
care_pet_and_diseases

Common Pests & Diseases

Common issues for Island mallow based on 10 million real cases
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 more
Brown spot
Brown spot  Brown spot  Brown spot
This infection can cause brown spots or patches to appear on the plant.
Solutions: In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary. Organic options won’t kill the fungus, but will prevent it from spreading. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Learn More more
Caterpillars
Caterpillars  Caterpillars  Caterpillars
Caterpillars are fleshy moth or butterfly larvae that come in an array of colors, patterns, and even hairstyles. They chew on leaves and flower petals, creating large, irregular holes.
Solutions: Even though caterpillars are diverse, they all chew on plant parts and can cause significant damage if present in large numbers. For severe cases: Apply insecticide. For an organic solution, spray plants with a Bacillus thuringiensis (Bt), which specifically affects the larval stage of moths and butterflies. Be sure to coat plants, since caterpillars need to ingest Bt for it to be effective. This will not harm other insects. Spray a chili extract. Chili seeds can be cooked in water to make a spicy spray that caterpillars don't like. Spray this mixture on the plants, but be aware it will also be spicy to humans. Introduce beneficial insects. Release beneficial insects to the garden that eat caterpillars, such as parasitic wasps. For less severe cases: Hand pick. Using gloves, pick off caterpillars on plants and dispose of them in a bucket of soapy water. Dust plants with diatomaceous earth. This powder is harmless to humans but irritates caterpillars. Therefore, it will make it difficult for caterpillars to move and eat.
Learn More more
Aged yellow and dry
Aged yellow and dry  Aged yellow and dry  Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Learn More more
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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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Brown spot
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Brown spot
This infection can cause brown spots or patches to appear on the plant.
Overview
Overview
Discolored spots on the foliage of plants are one of the most common disease problems people observe. These spots are caused by fungal and bacterial diseases, with most infections related to a fungal pathogen.
Brown spot can occurs on all houseplants, flowering ornamentals, vegetable plants, and leaves of trees, bushes, and shrubs. No plants are resistant to it, and the problem is worse in warm, wet environments. It can occur at any point in the life stage as long as leaves are present.
Small brownish spots appear on the foliage and enlarge as the disease progresses. In severe cases, the plant or tree is weakened when the lesions interrupt photosynthesis or cause defoliation.
Symptom Analysis
Symptom Analysis
In most cases, brown spot only affects a small percentage of the whole plant, appearing on a small amount of the leaves. A small infection only puts minor stress on the plant. However, if left untreated and the disease progresses over numerous seasons, it will severely impact the health and productivity of the infected specimen.
  • Sporulation begins (reproduction of the fungal spores), and tiny spots appear on leaves.
  • Placement is often random and scattered as diseases are spread through raindrops.
  • May appear on lower leaves and the interior of the plant where humidity is higher.
  • Brown spots enlarge and grow large enough to touch neighboring spots to form a more prominent blotch.
  • Leaf margins may turn yellow.
  • Tiny black dots (fruiting bodies of the fungi) appear in the dead spots.
  • Blotches grow in size until the entire leaf is brown.
  • The leaf falls off the plant.
Severe Symptoms
  • Partial or complete premature defoliation
  • Reduced growth
  • Increased susceptibility to pests and other diseases
Disease Cause
Disease Cause
Brown spot, or leaf spot, is a common descriptive term given to several diseases affecting the leaves of plants and trees. Around 85% of diseases exhibiting leaf spots are due to fungus or fungus-like organisms. Sometimes brown spot is caused by a bacterial infection, or insect activity with similar symptoms.
When conditions are warm and the leaf surfaces are wet, fungal spores being transported by wind or rain land on the surface and cling to it. They do not rupture the cell walls but grow in the space between the plant plasma membrane and the plant cell wall. As the spores reproduce, they release toxins and enzymes that cause necrotic spots (i.e., dead tissue) on the leaves, allowing the fungi to consume the products released when the cells degrade.
Solutions
Solutions
In minor cases of brown spot, there isn’t any need to treat the disease. However, if much of the foliage is affected and defoliation occurs, the plant will benefit from getting rid of the infection. It is recommended to start by applying organic treatment options, working up to the more potent synthetic, chemical fungicides if necessary.
Organic options won’t kill the fungus, but will prevent it from spreading.
  1. Dissolve ½ teaspoon of baking soda and one teaspoon of liquid soap in a gallon of water. Using a spray bottle, spray on tops and bottoms of leaves until the mixture drips off. Repeat every two weeks until existing spots stop enlarging and new spots no longer appear.
  2. Spray a copper-based fungicidal soap on the leaves, coating the top and bottom leaf surfaces. Reapply as directed on the product label. Copper penetrates the leaf surface and prevents germination of spores so the fungus cannot spread.
  3. Apply an all-purpose fungicide to the entire plant, following the label instructions carefully.
Prevention
Prevention
Like many other diseases, it is easier to prevent brown spot than cure it, and this is done through cultural practices.
  • Clear fall leaves from the ground before winter to minimize places where fungi and bacteria can overwinter.
  • Maintain good air movement between plants through proper plant spacing.
  • Increase air circulation through the center of plants through pruning.
  • Thoroughly clean all pruning tools after working with diseased plants.
  • Never dispose of disease plant material in a compost pile.
  • Avoid overhead watering to keep moisture off of the foliage.
  • Keep plants healthy by providing adequate sunlight, water, and fertilizer.
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Caterpillars
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Caterpillars
Caterpillars are fleshy moth or butterfly larvae that come in an array of colors, patterns, and even hairstyles. They chew on leaves and flower petals, creating large, irregular holes.
Overview
Overview
Caterpillars can cause problems for home gardeners. If not managed, these insects can defoliate a plant in just a matter of days. However, home gardeners face a challenge because these caterpillars eventually turn into beautiful butterflies and moths, which are important for pollination and the general ecosystem.
There are thousands of different species of caterpillars and many will only target certain plants. If caterpillars are posing a problem, they can be removed by hand, or gardeners can use insect-proof netting to protect their valuable plants.
Symptom Analysis
Symptom Analysis
Caterpillars are the larvae of butterflies and moths. During the warmer months, butterflies and moths that visit gardens will lay their eggs on the underside of leaves.
When the tiny eggs hatch, the young larvae emerge and start feeding on the leaves of the plant. Depending on how many larvae have hatched, they can easily defoliate the plant in a very short period of time. Caterpillars will shed their skin as they grow, around 4 or 5 times during this feeding cycle.
Symptoms of caterpillars eating plants appear as holes in the leaves. The edges of the leaves may be eaten away as well, and flowers can be affected as well.
Some are easy to see, but others need to be searched for. This is because their bodies are often camouflaged to look like part of the plant. Gardeners need to look carefully along the stems of the plant as well as under the leaves. Also, look for tiny white, yellow, or brown eggs that can be found in groups on the underside of leaves.
Once the caterpillar is fully grown, it transforms into a pupa or chrysalis. Then, after a period of time that varies according to the species, a butterfly or moth will emerge from the pupa and the cycle begins again.
Solutions
Solutions
Even though caterpillars are diverse, they all chew on plant parts and can cause significant damage if present in large numbers.
For severe cases:
  1. Apply insecticide. For an organic solution, spray plants with a Bacillus thuringiensis (Bt), which specifically affects the larval stage of moths and butterflies. Be sure to coat plants, since caterpillars need to ingest Bt for it to be effective. This will not harm other insects.
  2. Spray a chili extract. Chili seeds can be cooked in water to make a spicy spray that caterpillars don't like. Spray this mixture on the plants, but be aware it will also be spicy to humans.
  3. Introduce beneficial insects. Release beneficial insects to the garden that eat caterpillars, such as parasitic wasps.
For less severe cases:
  1. Hand pick. Using gloves, pick off caterpillars on plants and dispose of them in a bucket of soapy water.
  2. Dust plants with diatomaceous earth. This powder is harmless to humans but irritates caterpillars. Therefore, it will make it difficult for caterpillars to move and eat.
Prevention
Prevention
Prevention may require less effort than attempts to eradicate infestations that have already begun. Here are our top steps for prevention:
  1. Monitor plants. Check plants regularly for caterpillar eggs on leaves. If they do not belong to an endangered species, they should be squished.
  2. Use insect netting. Cover plants with insect netting to prevent butterflies and moths from laying eggs on plants.
  3. Apply diatomaceous earth. Apply DE to plants early in the season and reapply after rain.
  4. Encourage plant diversity. This will attract predatory insects including parasitic wasps.
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Aged yellow and dry
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Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
Solutions
Solutions
If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Prevention
Prevention
Unfortunately, there is no way to prevent plants from dying of “old age.” To help prolong their life, and put off symptoms of aged yellow and dry for as long as possible, take care of them by giving them enough water, fertilizing them appropriately, and making sure they get enough sunlight.
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care_more_info

More About Island Mallow

Plant Type
Plant Type
Herb, Shrub
Lifespan
Lifespan
Perennial
Spread
Spread
3 to 6 m
Bloom Time
Bloom Time
Spring, Summer, Fall
Flower Size
Flower Size
2.5 to 5 cm
Plant Height
Plant Height
1 to 4 m
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Common Problems

My common island mallow is turning brown. Why is this happening?

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this is probably the result of heat stress. Even though the island mallow is relatively drought-tolerant, prolonged hot periods may damage it. Prune back the dying stems to the first flower row and water generously.

My island mallow has yellowing leaves and only a few blooms, what can I do?

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It sounds like your island mallow is lacking in sunlight. Remember that the island mallow needs full sun exposure and at least six hours of it. If possible, move the plant to a more suitable position and mix in some organic compost with the soil, to give it a little boost and help it to regain its vigor.
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