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Common hollyhock play
Common hollyhock
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Common hollyhock
Common hollyhock
Common hollyhock
Common hollyhock
Common hollyhock
Alcea rosea
Also known as : Garden hollyhock
Common hollyhock (Alcea rosea) is a stalk-flowering plant known for its height and attractive flowers. It regularly reaches head height or beyond - from 1.5 to 2.5 m tall. The presence of common hollyhock in a garden can also attract butterflies and hummingbirds.
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care guide

Care Guide for Common hollyhock

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Watering Care
Watering Care
Common hollyhock is not very drought-tolerant, even after the roots are well-established. New plantings will require consistent, deep waterings every week or so. As they mature, they won't require as much water in the off-season, but they'll remain plenty thirsty while they're flowering. Keep soil moist with weekly waterings, and water even more frequently during periods of heat or drought.
Details on Watering Care Watering Care
Fertilizing Care
Fertilizing Care
Common hollyhock will produce colorful, vigorous blooms when grown in nutrient-rich soil. A balanced, slow-release fertilizer can be added around the base of the plant in late spring and in early fall, or if your soil is particularly poor or you'd like to encourage additional growth, you may also fertilize several times during the primary growing season.
Details on Fertilizing Care Fertilizing Care
Pruning
Pruning
Trim the diseased, withered leaves once a month.
Details on Pruning Pruning
Soil Care
Soil Care
Loam, Sand, Chalky, Clay, Acidic, Neutral, Alkaline
Details on Soil Care Soil Care
Repotting
Repotting
Needs excellent drainage in pots
Details on Repotting Repotting
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Common hollyhock
Water
Water
Every week
Sunlight
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Full sun
Hardiness Zones
Hardiness Zones
2 to 10
Planting Time
Planting Time
Spring
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Questions About Common hollyhock

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Watering Watering Watering
Pruning Pruning Pruning
Sunlight Sunlight Sunlight
Temperature Temperature Temperature
Fertilizing Fertilizing Fertilizing
What is the best way to water my Common hollyhock?
When watering the Common hollyhock, 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 Common hollyhock 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 Common hollyhock too much or too little?
Both overwatering and underwatering will be detrimental to the health of your Common hollyhock, 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 Common hollyhock, 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 Common hollyhock have become brittle and brown.
It is crucial that you notice the signs of overwatering as soon as possible when caring for your Common hollyhock. 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 Common hollyhock 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 Common hollyhock 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 Common hollyhock?
If your plant is in a pot. The most precise way to decide whether your Common hollyhock 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 Common hollyhock 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 Common hollyhock can show an admirable ability to withstand drought.
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How much water does my Common hollyhock need?
When it comes time to water your Common hollyhock, 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 Common hollyhock at different growth stages?
The water needs of the Common hollyhock can change depending on growth stages as well. For example, when your Common hollyhock 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 Common hollyhock 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 Common hollyhock 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 Common hollyhock more water at this time.
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How should I water my Common hollyhock through the seasons?
The Common hollyhock 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 Common hollyhock will contract a disease.
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What's the difference between watering my Common hollyhock indoors and outdoors?
It is most common to grow the Common hollyhock 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 Common hollyhock 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 Common hollyhock 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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Key Facts About Common hollyhock

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Attributes of Common hollyhock

Lifespan
Perennial, Biennial, Annual
Plant Type
Herb
Planting Time
Spring
Bloom Time
Summer, Fall
Harvest Time
Fall
Plant Height
1.5 m to 2.5 m
Spread
50 cm to 1 m
Leaf Color
Green
Flower Size
5 cm to 10 cm
Flower Color
Pink
Red
White
Yellow
Purple
Orange
Cream
Violet
Fruit Color
Brown
Stem Color
Green
Dormancy
Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 35 ℃
Growth Season
Spring, Summer, Fall
Growth Rate
Rapid

Name story

Common hollyhock
It is often called common hollyhock where the word "hollyhock" originated from "holihoc" in medieval English, meaning holy mallow. Hollyhock is still used today to call any Alcea genus plants. As Alcea rosea is the most common plant in the genus, it is called common hollyhock.

Symbolism

Fruitfulness, Fecundity, Ambition, Devotion to Love, fertility

Usages

Garden Use
Common hollyhock is good for planting in rock gardens and flowerbeds. It is prized for its ornamental blooms and is a staple in flowerbeds and borders in cottage gardens. It is often considered a good filler for summer bulb beds, and grows well with pansies and campanulas.

Scientific Classification of Common hollyhock

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pests

Common Pests & Diseases About Common hollyhock

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Common issues for Common hollyhock based on 10 million real cases
Brown blotch yellow edge
Brown blotch yellow edge Brown blotch yellow edge
Brown blotch yellow edge
Brown spot is a fungal disease that affects Common hollyhock, causing inconsistent, yellow-brownish spots on leaves. Severe infection may lead in leaf-drop, causing environmental stress to the plant and potentially stunting its growth.
Leaf spot
Leaf spot Leaf spot
Leaf spot
Leaf spot is a fungal disease affecting Common hollyhock, characterized by spot formation on leaves and often leading to leaf drop. It can stunt growth and reduce blooms, significantly impacting plant health.
Caterpillars
Caterpillars Caterpillars
Caterpillars
Caterpillars infestation in Common hollyhock can lead to extensive foliar damage affecting the plant's aesthetic appeal and its overall health. It's a common issue encountered in certain climates and is more prominent during specific months. Moderately infectious and lethal, control measures are available ranging from non-pesticide to pesticide methods.
Leaf rot
Leaf rot Leaf rot
Leaf rot
Leaf rot is a common plant disease affecting Common hollyhock, leading to dropping of leaves and brown, visible infections. It's caused majorly by fungal pathogens, and if not treated correctly and promptly, can lead to plant decay and death.
Rust disease
Rust disease Rust disease
Rust disease
Rust disease, caused by the Puccinia malvacearum fungus, severely affects Common hollyhock with orange-brown pustules on leaves, resembling rust. The disease weakens the plant, impeding growth and bloom, and may eventually cause plant death.
Leaf beetles
Leaf beetles Leaf beetles
Leaf beetles
Leaf beetles are a class of colored insects 1 to 2 cm in size. They gnaw on leaves and petals resulting in small, round holes scattered over the surface.
Solutions: For less serious cases: Remove beetles, nymphs, and eggs. Remove all life stages of the beetles and kill them by placing them in a bucket of warm, soapy water. This can be done more easily by placing the bucket under affected leaves and shaking the plant. This method is most effective in the afternoon when leaf beetles are more active. Always dispose of insects in a sealed bag or container to avoid escape and spread. To treat more serious infestations: Apply organic insecticides. Use naturally-derived insecticides before moving on to synthetic insecticides. Neem oil and pyrethrum are naturally-derived insecticides that should be applied following label instructions. Apply synthetic insecticides. Examples of insecticides effective for leaf beetles include carbaryl, permethrin, and bifenthrin. Apply insecticides according to label instructions.
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Brown blotch yellow edge
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch yellow edge Disease on Common hollyhock?
What is Brown blotch yellow edge Disease on Common hollyhock?
Brown spot is a fungal disease that affects Common hollyhock, causing inconsistent, yellow-brownish spots on leaves. Severe infection may lead in leaf-drop, causing environmental stress to the plant and potentially stunting its growth.
Symptom Analysis
Symptom Analysis
Manifestations include irregular brown spots, yellowing or dead patches on leaves, and premature leaf drop. In severe cases, this can cause stunting and reduced plant vigor.
What Causes Brown blotch yellow edge Disease on Common hollyhock?
What Causes Brown blotch yellow edge Disease on Common hollyhock?
1
Pathogen
Caused by a fungus known as Bipolaris oryzae or Cochliobolus miyabeanus, typically favoring damp conditions in both soil and air, facilitating higher infection rates.
2
Environmental Factors
Abundant moisture, warm conditions and compacted, poorly-drained soil.
How to Treat Brown blotch yellow edge Disease on Common hollyhock?
How to Treat Brown blotch yellow edge Disease on Common hollyhock?
1
Non pesticide
Watering practice: Ensure to water the plant at the base, not the leaves, to avoid creating moist environments that favor fungal growth.

Plant debris removal: Regularly remove fallen leaves and damaged parts of the plant to prevent fungal spores spread.
2
Pesticide
Fungicide: Use of a broad-spectrum fungicide, ensuring foliar applications cover all portions of the plant, can help control the spread of the disease.
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Leaf spot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf spot Disease on Common hollyhock?
What is Leaf spot Disease on Common hollyhock?
Leaf spot is a fungal disease affecting Common hollyhock, characterized by spot formation on leaves and often leading to leaf drop. It can stunt growth and reduce blooms, significantly impacting plant health.
Symptom Analysis
Symptom Analysis
The disease manifests as brown or black spots on the leaves of Common hollyhock, especially on the underside. As the disease advances, these spots may coalesce, leading to yellowing and dropping of leaves.
What Causes Leaf spot Disease on Common hollyhock?
What Causes Leaf spot Disease on Common hollyhock?
1
fungal pathogens
The disease is mostly caused by the fungus Cercospora althaeina and Pseudomonas syringae.
2
environmental conditions
Favorable conditions such as high humidity, overhead irrigation, and temperatures around 77–86°F can encourage disease development.
How to Treat Leaf spot Disease on Common hollyhock?
How to Treat Leaf spot Disease on Common hollyhock?
1
Non pesticide
plant hygiene: Ensure proper sanitation by removal and destruction of infected leaves and debris.

adequate spacing: Good air circulation and adequate plant spacing can reduce leaf wetness and hence lessen the disease.
2
Pesticide
fungicide application: Fungicides containing chlorothalonil or mancozeb can be applied as soon as symptoms appear, and repeated every 7–14 days until conditions are no longer favorable.
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Caterpillars
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Caterpillars Disease on Common hollyhock?
What is Caterpillars Disease on Common hollyhock?
Caterpillars infestation in Common hollyhock can lead to extensive foliar damage affecting the plant's aesthetic appeal and its overall health. It's a common issue encountered in certain climates and is more prominent during specific months. Moderately infectious and lethal, control measures are available ranging from non-pesticide to pesticide methods.
Symptom Analysis
Symptom Analysis
The main symptoms visible on Common hollyhock include foliage with various holes and bite marks primarily on leaves. The presence of caterpillars or their larval stages on the plant or nearby can also signals an infestation.
What Causes Caterpillars Disease on Common hollyhock?
What Causes Caterpillars Disease on Common hollyhock?
1
Insect
The damage is directly caused by different caterpillar species. They chew on the leaves and overall foliage of the Common hollyhock.
How to Treat Caterpillars Disease on Common hollyhock?
How to Treat Caterpillars Disease on Common hollyhock?
1
Non pesticide
Physical removal: Manually collect and remove the caterpillars. This method may not be viable for large-scale infestations.

Use natural predators: Encourage the presence of natural predatory birds, insects, and spiders which feed on caterpillars.
2
Pesticide
Pesticide spray: Apply a suitable pesticide targeting caterpillars. Always read the label for proper usage and safety measures.

Systemic insecticides: Using systemic insecticides can provide ongoing protection. These are absorbed by the plant and gives protection when insects feed.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Common hollyhock?
What is Leaf rot Disease on Common hollyhock?
Leaf rot is a common plant disease affecting Common hollyhock, leading to dropping of leaves and brown, visible infections. It's caused majorly by fungal pathogens, and if not treated correctly and promptly, can lead to plant decay and death.
Symptom Analysis
Symptom Analysis
Common hollyhock affected by leaf rot often present with faded, yellowing leaves which eventually turn brown and rot. Soft, water-soaked spots may appear, often accompanied by an unpleasant smell.
What Causes Leaf rot Disease on Common hollyhock?
What Causes Leaf rot Disease on Common hollyhock?
1
Fungal pathogens
Leaf rot in Common hollyhock is most commonly caused by Rhizoctonia solani and Phytophthora parasitica, which thrive in waterlogged and poorly drained soils.
2
Environment
Conditions such as excessive humidity, lack of sunlight, and poor air circulation can encourage the growth and spread of the pathogens.
How to Treat Leaf rot Disease on Common hollyhock?
How to Treat Leaf rot Disease on Common hollyhock?
1
Non pesticide
Proper spacing: Ensuring Common hollyhock is planted with enough spacing promotes proper air circulation, reducing the leaf's wetness duration hence discouraging pathogen growth.

Pruning: Remove and destroy infected parts to limit disease spread and improve air circulation.
2
Pesticide
Fungicidal Treatments: Spray Common hollyhock with recommended fungicides like Mancozeb, keeping to the advised safety guidelines and frequency.
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Rust disease
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Rust disease Disease on Common hollyhock?
What is Rust disease Disease on Common hollyhock?
Rust disease, caused by the Puccinia malvacearum fungus, severely affects Common hollyhock with orange-brown pustules on leaves, resembling rust. The disease weakens the plant, impeding growth and bloom, and may eventually cause plant death.
Symptom Analysis
Symptom Analysis
The disease manifests on Common hollyhock as orange-brown pustules on the undersides of leaves, eventually covering the entire leaf surface. Leaves may yellow and drop, and the plant's growth and bloom can be stunted.
What Causes Rust disease Disease on Common hollyhock?
What Causes Rust disease Disease on Common hollyhock?
1
Fungus
The disease is caused by a fungus called Puccinia malvacearum, which thrives in cool, moist conditions.
How to Treat Rust disease Disease on Common hollyhock?
How to Treat Rust disease Disease on Common hollyhock?
1
Non pesticide
Remove affected parts: Prune and discard infected leaves, stems, and flowers immediately to prevent the spread of the disease.
2
Pesticide
Apply fungicide: Use a fungicide specifically designed to control rust disease, following the manufacturer's instructions for dosage and application.
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Leaf beetles
plant poor
Leaf beetles
Leaf beetles are a class of colored insects 1 to 2 cm in size. They gnaw on leaves and petals resulting in small, round holes scattered over the surface.
Overview
Overview
Leaf beetles range in size from 1.5 mm to 2 cm. Both adult beetles and their larvae eat the leaves of many different types of plants. There are over 35,000 different species of leaf beetles, in a variety of colors including gold, green, yellow-striped, and red striped. Some of these have been mistaken for ladybirds because of their shape and coloring. They can be oval, round, or elongated in shape. These insect pests are most active in spring and summer.
If not controlled, leaf beetles can do a lot of damage to vegetable crops and ornamental plants. They feed on the leaves, flowers, stems, roots, and fruits of different plants. They can fly, which means it's easy for them to move from one plant to another. Some species of leaf beetles only target one specific crop, while others will target many different types of plants. Although a lot of the damage that they cause is cosmetic, an infestation can weaken a plant and leave it prone to other more problematic diseases.
Symptom Analysis
Symptom Analysis
The first signs of a leaf beetles infestation are small visible holes in leaves. Leaves then become discolored and dark beetle droppings can be seen. As the leaves turn yellow and brown, they will drop off the plant onto the ground. Some leaves will appear skeletonized with only the veins still remaining.
Infestation begins in spring, when the adult beetles emerge from the soil and lay their eggs on the leaves of plants. When these eggs hatch, the young nymphs start munching on the leaves as they grow up. Once leaf beetles are large and mature, they'll fall to the ground and pupate in the soil over winter before starting the cycle all over again.
Leaf beetles also eat holes in fruits and vegetables. These can be seen as small round holes that sometimes have a larger brown area surrounding them.
Solutions
Solutions
For less serious cases:
  1. Remove beetles, nymphs, and eggs. Remove all life stages of the beetles and kill them by placing them in a bucket of warm, soapy water. This can be done more easily by placing the bucket under affected leaves and shaking the plant. This method is most effective in the afternoon when leaf beetles are more active. Always dispose of insects in a sealed bag or container to avoid escape and spread.
To treat more serious infestations:
  1. Apply organic insecticides. Use naturally-derived insecticides before moving on to synthetic insecticides. Neem oil and pyrethrum are naturally-derived insecticides that should be applied following label instructions.
  2. Apply synthetic insecticides. Examples of insecticides effective for leaf beetles include carbaryl, permethrin, and bifenthrin. Apply insecticides according to label instructions.
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weed

Weed Control About Common hollyhock

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Weeds
Common hollyhock was imported into Europe from southwestern China at some point in the 15th century. It quickly became one of the favorite garden plants, especially in England during the Victorian era. The plant can self-seed, so it is able to escape gardens and can be found growing freely, although this is not a frequent occurrence. Considering that common hollyhock has been cultivated outside its native range for so long and has not become widespread in the natural environment, it is not considered a weed of concern, although escaped individual plants may grow in undesirable locations.
How to Control it
Common hollyhock is a very prolific seed producer and can spread uncontrollably. If you want to grow the common hollyhock in your garden, it is advised to remove the flowers after they finish blooming in order to prevent seed production. If you want to remove the common hollyhock from your garden, simply cut its stem at the base, or dig out the entire plant.
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distribution

Distribution of Common hollyhock

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Habitat of Common hollyhock

Disturbed sites, roadsides, vacant lots
Northern Hemisphere
South Hemisphere

Distribution Map of Common hollyhock

Common hollyhock originates from Turkey, where it has been cultivated so long that its original wild habitat is unknown. This garden ornamental has had global distribution but is most likely to grow wild as an escapee from cultivation in temperate climates around the globe.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
habit
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More Info on Common Hollyhock Growth and Care

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Basic Care Guide
Common Pests & Diseases
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Water
Every week
Common hollyhock is native to regions in Europe and Asia, including the Mediterranean, and it has been introduced to other parts of the world. It typically grows in areas with well-drained soil and receives an average amount of rainfall. Because of its natural habitat, common hollyhock prefers moderate watering. It is important to provide enough water to keep the soil consistently moist but not waterlogged, mimicking the conditions it is accustomed to in its native environment.
Watering Techniques
Lighting
Full sun
Thriving for the most part in areas with a lot of sun exposure, common hollyhock, a native plant of natural environments with abundant light, can also endure in spots with moderate sun. This versatile plant may suffer from hindered growth if the sunlight provided is either too scant or too abundant.
Best Sunlight Practices
Temperature
0 - 41 ℃
Common hollyhock is indigenous to areas with temperatures of 68 to 95 °F (20 to 35 ℃). It craves warm summers and mild winters. However, to ensure successful growth, temperature alterations such as shade provision during sizzling summers might be necessary.
Temp for Healthy Growth
Transplant
1-2 feet
The best time to transplant common hollyhock is during mid to late spring, as it provides ideal growing conditions. Ensure a sunny location with well-draining soil for optimal growth. If needed, give young plants extra support or choose a sheltered spot to protect from strong winds.
Transplant Techniques
Pruning
Spring, Summer, Autumn
This towering flower, adorned with large, showy blossoms, thrives best with careful pruning. For common hollyhock, timely removal of dead flowers enhances blooming, and cutting back stalks post-bloom prevents self-seeding. Pruning in early spring removes winter damage, whereas late fall trims prepare the plant for dormancy. Additionally, pruning lower leaves can improve air circulation and reduce disease risk. Pruning not only shapes common hollyhock but also fosters healthier, more prolific growth.
Pruning techniques
Propagation
Spring
The ideal propagation season for common hollyhock is Spring. Preferred methods include sowing seeds, which are moderately easy to propagate. Signs of successful propagation include germination and emergence of seedlings. For optimal results, soak seeds in water for a few hours before sowing.
Propagation Techniques
Brown blotch yellow edge
Brown spot is a fungal disease that affects Common hollyhock, causing inconsistent, yellow-brownish spots on leaves. Severe infection may lead in leaf-drop, causing environmental stress to the plant and potentially stunting its growth.
Learn More About the Disease
Leaf spot
Leaf spot is a fungal disease affecting Common hollyhock, characterized by spot formation on leaves and often leading to leaf drop. It can stunt growth and reduce blooms, significantly impacting plant health.
Learn More About the Disease
Caterpillars
Caterpillars infestation in Common hollyhock can lead to extensive foliar damage affecting the plant's aesthetic appeal and its overall health. It's a common issue encountered in certain climates and is more prominent during specific months. Moderately infectious and lethal, control measures are available ranging from non-pesticide to pesticide methods.
Learn More About the Disease
Leaf rot
Leaf rot is a common plant disease affecting Common hollyhock, leading to dropping of leaves and brown, visible infections. It's caused majorly by fungal pathogens, and if not treated correctly and promptly, can lead to plant decay and death.
Learn More About the Disease
Rust disease
Rust disease, caused by the Puccinia malvacearum fungus, severely affects Common hollyhock with orange-brown pustules on leaves, resembling rust. The disease weakens the plant, impeding growth and bloom, and may eventually cause plant death.
Learn More About the Disease
Feng shui direction
South
Common hollyhock is considered to have favorable Feng Shui when placed to face the South direction, as it fosters vibrant energy flow and growth. Its tall stature and lush colors invoke qualities of balance, resilience, and prosperity, aligning with traditional Feng Shui principles for Southern-facing placements.
Fengshui Details
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Plants Related to Common hollyhock

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Field bindweed
Field bindweed
Field bindweed (*Convolvulus arvensis*) is a native Eurasian plant related to morning glory. It is considered an invasive species in non-native areas because it competes with other plants for sunlight and moisture. Field bindweed is very hard to eradicate because its taproots grow so deep, and its seeds can remain viable for decades.
Hoja Santa
Hoja Santa
Hoja Santa a sacred leaf that is widely used in Mexican cooking. The leaves have a fragrant aroma reminiscent of rootbeer when crushed, hence the common name rootbeer tree.
Para grass
Para grass
Para grass is a vigorous, semi-prostrate perennial grass with creeping stolons which can grow up to 5 m long. The stems have hairy nodes and leaf sheaths and the leaf blades are up to 2 cm wide and 30 cm long. The flower-head is a loose panicle up to 30 cm long with spreading branches. The paired spikelets are arranged in uneven rows and are elliptical and 2.5 to 5 mm long. The rachis is tinged with purple.
Weeping willow
Weeping willow
Weeping willow (Salix babylonica) is a willow tree that originates in China. Now, it grows widely around the globe due to being traded on the Silk Road. This tree is planted ornamentally in parks and gardens.
French rose
French rose
French rose (*Rosa gallica*) is a flowering deciduous shrub native to central and Southern Europe. It was one of the first rose species to be cultivated in Europe; french rose got its domesticated start with ancient Greeks and Romans and was later used in medieval gardens. Today, this cold-tolerant flower's numerous cultivars adorn gardens worldwide.
Mexican petunia
Mexican petunia
Mexican petunia (Ruellia simplex) is an evergreen herbaceous perennial recognized by its wrinkly, trumpet-shaped purple flowers. It is commonly cultivated as an ornamental plant. Due to its vigorous spreading ability, Ruellia simplex has become widely naturalized outside Mexico. It is considered an invasive species in many countries.
Poison ivy
Poison ivy
In pop culture, poison ivy is a symbol of an obnoxious weed because, despite its unthreatening looks, it gives a highly unpleasant contact rash to the unfortunate person who touches it. Still, it is commonly eaten by many animals, and the seeds are a favorite with birds. The leaves turn bright red in fall. Its sister species, Western poison ivy (Toxicodendron rydbergii), is not considered to be invasive in the United States, but is noxious in Australia and New Zealand.
Pokeweed
Pokeweed
Although its berries look juicy and tempting, the fruits and the root of pokeweed are toxic and should not be eaten. Pokeweed is considered a pest species by farmers but is nevertheless often grown as an ornamental plant. Its berries can be made into pokeberry ink as well.
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Common hollyhock play
Common hollyhock
Common hollyhock
Common hollyhock
Common hollyhock
Common hollyhock
Common hollyhock
Alcea rosea
Also known as: Garden hollyhock
Common hollyhock (Alcea rosea) is a stalk-flowering plant known for its height and attractive flowers. It regularly reaches head height or beyond - from 1.5 to 2.5 m tall. The presence of common hollyhock in a garden can also attract butterflies and hummingbirds.
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Sunlight
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Questions About Common hollyhock

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Key Facts About Common hollyhock

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Attributes of Common hollyhock

Lifespan
Perennial, Biennial, Annual
Plant Type
Herb
Planting Time
Spring
Bloom Time
Summer, Fall
Harvest Time
Fall
Plant Height
1.5 m to 2.5 m
Spread
50 cm to 1 m
Leaf Color
Green
Flower Size
5 cm to 10 cm
Flower Color
Pink
Red
White
Yellow
Purple
Orange
Cream
Violet
Fruit Color
Brown
Stem Color
Green
Dormancy
Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 35 ℃
Growth Season
Spring, Summer, Fall
Growth Rate
Rapid
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Name story

Common hollyhock
It is often called common hollyhock where the word "hollyhock" originated from "holihoc" in medieval English, meaning holy mallow. Hollyhock is still used today to call any Alcea genus plants. As Alcea rosea is the most common plant in the genus, it is called common hollyhock.

Symbolism

Fruitfulness, Fecundity, Ambition, Devotion to Love, fertility

Usages

Garden Use
Common hollyhock is good for planting in rock gardens and flowerbeds. It is prized for its ornamental blooms and is a staple in flowerbeds and borders in cottage gardens. It is often considered a good filler for summer bulb beds, and grows well with pansies and campanulas.

Scientific Classification of Common hollyhock

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pests

Common Pests & Diseases About Common hollyhock

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Common issues for Common hollyhock based on 10 million real cases
Brown blotch yellow edge
Brown blotch yellow edge Brown blotch yellow edge Brown blotch yellow edge
Brown spot is a fungal disease that affects Common hollyhock, causing inconsistent, yellow-brownish spots on leaves. Severe infection may lead in leaf-drop, causing environmental stress to the plant and potentially stunting its growth.
Learn More About the Brown blotch yellow edge more
Leaf spot
Leaf spot Leaf spot Leaf spot
Leaf spot is a fungal disease affecting Common hollyhock, characterized by spot formation on leaves and often leading to leaf drop. It can stunt growth and reduce blooms, significantly impacting plant health.
Learn More About the Leaf spot more
Caterpillars
Caterpillars Caterpillars Caterpillars
Caterpillars infestation in Common hollyhock can lead to extensive foliar damage affecting the plant's aesthetic appeal and its overall health. It's a common issue encountered in certain climates and is more prominent during specific months. Moderately infectious and lethal, control measures are available ranging from non-pesticide to pesticide methods.
Learn More About the Caterpillars more
Leaf rot
Leaf rot Leaf rot Leaf rot
Leaf rot is a common plant disease affecting Common hollyhock, leading to dropping of leaves and brown, visible infections. It's caused majorly by fungal pathogens, and if not treated correctly and promptly, can lead to plant decay and death.
Learn More About the Leaf rot more
Rust disease
Rust disease Rust disease Rust disease
Rust disease, caused by the Puccinia malvacearum fungus, severely affects Common hollyhock with orange-brown pustules on leaves, resembling rust. The disease weakens the plant, impeding growth and bloom, and may eventually cause plant death.
Learn More About the Rust disease more
Leaf beetles
Leaf beetles Leaf beetles Leaf beetles
Leaf beetles are a class of colored insects 1 to 2 cm in size. They gnaw on leaves and petals resulting in small, round holes scattered over the surface.
Solutions: For less serious cases: Remove beetles, nymphs, and eggs. Remove all life stages of the beetles and kill them by placing them in a bucket of warm, soapy water. This can be done more easily by placing the bucket under affected leaves and shaking the plant. This method is most effective in the afternoon when leaf beetles are more active. Always dispose of insects in a sealed bag or container to avoid escape and spread. To treat more serious infestations: Apply organic insecticides. Use naturally-derived insecticides before moving on to synthetic insecticides. Neem oil and pyrethrum are naturally-derived insecticides that should be applied following label instructions. Apply synthetic insecticides. Examples of insecticides effective for leaf beetles include carbaryl, permethrin, and bifenthrin. Apply insecticides according to label instructions.
Learn More About the Leaf beetles more
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Brown blotch yellow edge
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch yellow edge Disease on Common hollyhock?
What is Brown blotch yellow edge Disease on Common hollyhock?
Brown spot is a fungal disease that affects Common hollyhock, causing inconsistent, yellow-brownish spots on leaves. Severe infection may lead in leaf-drop, causing environmental stress to the plant and potentially stunting its growth.
Symptom Analysis
Symptom Analysis
Manifestations include irregular brown spots, yellowing or dead patches on leaves, and premature leaf drop. In severe cases, this can cause stunting and reduced plant vigor.
What Causes Brown blotch yellow edge Disease on Common hollyhock?
What Causes Brown blotch yellow edge Disease on Common hollyhock?
1
Pathogen
Caused by a fungus known as Bipolaris oryzae or Cochliobolus miyabeanus, typically favoring damp conditions in both soil and air, facilitating higher infection rates.
2
Environmental Factors
Abundant moisture, warm conditions and compacted, poorly-drained soil.
How to Treat Brown blotch yellow edge Disease on Common hollyhock?
How to Treat Brown blotch yellow edge Disease on Common hollyhock?
1
Non pesticide
Watering practice: Ensure to water the plant at the base, not the leaves, to avoid creating moist environments that favor fungal growth.

Plant debris removal: Regularly remove fallen leaves and damaged parts of the plant to prevent fungal spores spread.
2
Pesticide
Fungicide: Use of a broad-spectrum fungicide, ensuring foliar applications cover all portions of the plant, can help control the spread of the disease.
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Leaf spot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf spot Disease on Common hollyhock?
What is Leaf spot Disease on Common hollyhock?
Leaf spot is a fungal disease affecting Common hollyhock, characterized by spot formation on leaves and often leading to leaf drop. It can stunt growth and reduce blooms, significantly impacting plant health.
Symptom Analysis
Symptom Analysis
The disease manifests as brown or black spots on the leaves of Common hollyhock, especially on the underside. As the disease advances, these spots may coalesce, leading to yellowing and dropping of leaves.
What Causes Leaf spot Disease on Common hollyhock?
What Causes Leaf spot Disease on Common hollyhock?
1
fungal pathogens
The disease is mostly caused by the fungus Cercospora althaeina and Pseudomonas syringae.
2
environmental conditions
Favorable conditions such as high humidity, overhead irrigation, and temperatures around 77–86°F can encourage disease development.
How to Treat Leaf spot Disease on Common hollyhock?
How to Treat Leaf spot Disease on Common hollyhock?
1
Non pesticide
plant hygiene: Ensure proper sanitation by removal and destruction of infected leaves and debris.

adequate spacing: Good air circulation and adequate plant spacing can reduce leaf wetness and hence lessen the disease.
2
Pesticide
fungicide application: Fungicides containing chlorothalonil or mancozeb can be applied as soon as symptoms appear, and repeated every 7–14 days until conditions are no longer favorable.
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Caterpillars
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Caterpillars Disease on Common hollyhock?
What is Caterpillars Disease on Common hollyhock?
Caterpillars infestation in Common hollyhock can lead to extensive foliar damage affecting the plant's aesthetic appeal and its overall health. It's a common issue encountered in certain climates and is more prominent during specific months. Moderately infectious and lethal, control measures are available ranging from non-pesticide to pesticide methods.
Symptom Analysis
Symptom Analysis
The main symptoms visible on Common hollyhock include foliage with various holes and bite marks primarily on leaves. The presence of caterpillars or their larval stages on the plant or nearby can also signals an infestation.
What Causes Caterpillars Disease on Common hollyhock?
What Causes Caterpillars Disease on Common hollyhock?
1
Insect
The damage is directly caused by different caterpillar species. They chew on the leaves and overall foliage of the Common hollyhock.
How to Treat Caterpillars Disease on Common hollyhock?
How to Treat Caterpillars Disease on Common hollyhock?
1
Non pesticide
Physical removal: Manually collect and remove the caterpillars. This method may not be viable for large-scale infestations.

Use natural predators: Encourage the presence of natural predatory birds, insects, and spiders which feed on caterpillars.
2
Pesticide
Pesticide spray: Apply a suitable pesticide targeting caterpillars. Always read the label for proper usage and safety measures.

Systemic insecticides: Using systemic insecticides can provide ongoing protection. These are absorbed by the plant and gives protection when insects feed.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Common hollyhock?
What is Leaf rot Disease on Common hollyhock?
Leaf rot is a common plant disease affecting Common hollyhock, leading to dropping of leaves and brown, visible infections. It's caused majorly by fungal pathogens, and if not treated correctly and promptly, can lead to plant decay and death.
Symptom Analysis
Symptom Analysis
Common hollyhock affected by leaf rot often present with faded, yellowing leaves which eventually turn brown and rot. Soft, water-soaked spots may appear, often accompanied by an unpleasant smell.
What Causes Leaf rot Disease on Common hollyhock?
What Causes Leaf rot Disease on Common hollyhock?
1
Fungal pathogens
Leaf rot in Common hollyhock is most commonly caused by Rhizoctonia solani and Phytophthora parasitica, which thrive in waterlogged and poorly drained soils.
2
Environment
Conditions such as excessive humidity, lack of sunlight, and poor air circulation can encourage the growth and spread of the pathogens.
How to Treat Leaf rot Disease on Common hollyhock?
How to Treat Leaf rot Disease on Common hollyhock?
1
Non pesticide
Proper spacing: Ensuring Common hollyhock is planted with enough spacing promotes proper air circulation, reducing the leaf's wetness duration hence discouraging pathogen growth.

Pruning: Remove and destroy infected parts to limit disease spread and improve air circulation.
2
Pesticide
Fungicidal Treatments: Spray Common hollyhock with recommended fungicides like Mancozeb, keeping to the advised safety guidelines and frequency.
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Rust disease
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Rust disease Disease on Common hollyhock?
What is Rust disease Disease on Common hollyhock?
Rust disease, caused by the Puccinia malvacearum fungus, severely affects Common hollyhock with orange-brown pustules on leaves, resembling rust. The disease weakens the plant, impeding growth and bloom, and may eventually cause plant death.
Symptom Analysis
Symptom Analysis
The disease manifests on Common hollyhock as orange-brown pustules on the undersides of leaves, eventually covering the entire leaf surface. Leaves may yellow and drop, and the plant's growth and bloom can be stunted.
What Causes Rust disease Disease on Common hollyhock?
What Causes Rust disease Disease on Common hollyhock?
1
Fungus
The disease is caused by a fungus called Puccinia malvacearum, which thrives in cool, moist conditions.
How to Treat Rust disease Disease on Common hollyhock?
How to Treat Rust disease Disease on Common hollyhock?
1
Non pesticide
Remove affected parts: Prune and discard infected leaves, stems, and flowers immediately to prevent the spread of the disease.
2
Pesticide
Apply fungicide: Use a fungicide specifically designed to control rust disease, following the manufacturer's instructions for dosage and application.
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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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Weed Control About Common hollyhock

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Weeds
Common hollyhock was imported into Europe from southwestern China at some point in the 15th century. It quickly became one of the favorite garden plants, especially in England during the Victorian era. The plant can self-seed, so it is able to escape gardens and can be found growing freely, although this is not a frequent occurrence. Considering that common hollyhock has been cultivated outside its native range for so long and has not become widespread in the natural environment, it is not considered a weed of concern, although escaped individual plants may grow in undesirable locations.
How to Control it
Common hollyhock is a very prolific seed producer and can spread uncontrollably. If you want to grow the common hollyhock in your garden, it is advised to remove the flowers after they finish blooming in order to prevent seed production. If you want to remove the common hollyhock from your garden, simply cut its stem at the base, or dig out the entire plant.
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Distribution of Common hollyhock

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Habitat of Common hollyhock

Disturbed sites, roadsides, vacant lots
Northern Hemisphere
South Hemisphere

Distribution Map of Common hollyhock

Common hollyhock originates from Turkey, where it has been cultivated so long that its original wild habitat is unknown. This garden ornamental has had global distribution but is most likely to grow wild as an escapee from cultivation in temperate climates around the globe.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
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Common Hollyhock Watering Instructions
Common hollyhock is native to regions in Europe and Asia, including the Mediterranean, and it has been introduced to other parts of the world. It typically grows in areas with well-drained soil and receives an average amount of rainfall. Because of its natural habitat, common hollyhock prefers moderate watering. It is important to provide enough water to keep the soil consistently moist but not waterlogged, mimicking the conditions it is accustomed to in its native environment.
When Should I Water My Common Hollyhock?
Importance of Timely Watering
Proper watering is critical for the healthy growth and flowering of common hollyhock. Providing water at the right time aids in maintaining its vibrant bloom and prevents the plant from diseases caused by overwatering or underwatering.
Soil Dryness
A clear sign that common hollyhock needs water is when the top 1 to 2 inches of soil become dry. To test this, insert your finger into the soil; if it feels dry to your touch, it's time for watering.
Leaf Discoloration
If leaves of common hollyhock are turning yellow, it may be a sign of overwatering. Conversely, if they are turning brown or crispy, it signals that the plant is possibly underwatered. Ensuring the appropriate watering frequency can resolve these color changes, leading to the restoration of the plant's natural green hue.
Wilting Leaves
Wilting or drooping of leaves can indicate a need for water. However, remember that wilting might occur in common hollyhock even after watering, due to water stress, which could signal overwatering. Thus, it's essential to corroborate this sign with other indicators like soil dryness and leaf color.
Potential Risks and Consequences
Ignoring these signs can lead to potential risks for common hollyhock including stunted growth, susceptibility to pests and diseases, or even plant death. Underwatering may lead to dehydration and weakened plant structure, while overwatering may result in root rot and fungal diseases.
Slow Growth
Common hollyhock showing slow growth or stopping to grow may not be getting enough water. Monitor growth regularly, especially during hotter months, as this may demand increased watering.
How Should I Water My Common Hollyhock?
Watering Requirements
Common hollyhock, has specific watering needs and sensitivities that should be considered for optimal hydration.
Watering Technique
Common hollyhocks, or common hollyhock, thrive with regular watering to keep the soil consistently moist. However, they are susceptible to root rot and fungal diseases if the soil is excessively wet or watered from above. To avoid these issues, bottom-watering is an effective method for watering this plant. This technique involves placing the plant pot in a tray or saucer filled with water and allowing the roots to absorb water from the bottom up. Bottom-watering helps ensure that the roots receive adequate moisture without saturating the surface, reducing the risk of fungal diseases and promoting healthy growth.
Watering Can Type
When using a watering can, it is recommended to choose one with a narrow spout. This type of spout allows you to direct the water flow directly to the base of the plant, avoiding excessive wetting of the foliage. By watering at the base, you can promote targeted hydration at the root level, which is essential for common hollyhock's overall health and vitality.
How Much Water Does Common Hollyhock Really Need?
Introduction
Common hollyhock is a species of plant native to Europe and Asia. It is commonly known as Common hollyhock and is recognized for its tall stalks of brightly colored flowers. In its natural habitat, Common hollyhock can be found growing in moist, well-drained soils.
Optimal Watering Quantity
Common hollyhock has a deep taproot that can extend up to 2-3 feet into the soil. This root depth allows the plant to access moisture from deeper layers of the soil. To ensure the plant receives the right amount of water, it is important to water deeply and thoroughly. The water should penetrate to the depth of the root system, reaching the bottom of the pot if potted. The frequency of watering depends on various factors such as pot size, root depth, and plant size. In general, it is recommended to water Common hollyhock when the top inch of soil feels dry. Depending on these factors, the volume of water needed per watering session can vary, but an average watering volume might range from 1 to 2 liters per plant.
Signs of Proper Hydration
When Common hollyhock receives the right amount of water, its leaves will appear healthy and vibrant, and the flowers will bloom abundantly. The stems will be sturdy and upright. On the other hand, signs of overwatering can include yellowing leaves, wilting, or the appearance of mold or fungus. Signs of underwatering may include drooping leaves, wilting, and the plant's overall lack of vigor.
Risks of Improper Watering
Providing too much water to Common hollyhock can lead to root rot and other fungal diseases. Overwatering can also cause the plant's roots to become waterlogged and deprive them of oxygen, which can inhibit the plant's growth and overall health. Underwatering, on the other hand, can result in stunted growth, decreased flower production, and a weakened plant that is more susceptible to pests and diseases.
Additional Advice
It is important to ensure that the soil has good drainage to prevent water from pooling around the roots. Adding organic matter to the soil can improve its water-holding capacity while still allowing excess water to drain away. Observing the plant's response to watering and considering environmental factors such as temperature and humidity can also help determine the optimal watering needs of Common hollyhock.
How Often Should I Water Common Hollyhock?
Every week
Watering Frequency
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Just like people, each plant has its own preferences and needs. Devote time to understanding your plants so you can nurture them properly. Observe your plants attentively, learning from their growth patterns, and becoming more in tune with their needs as you grow together. Keep a watchful eye on new plants and seedlings, as they are sensitive to both overwatering and underwatering. Shower them with gentle love and attention, fostering their growth and strength. Let the rhythm of your local climate guide your watering habits, adapting your schedule to the changing weather and the needs of your plants.
What Kind of Water is Best for Common Hollyhock?
Ideal Water Type
Common hollyhock thrives best with rainwater or tap water, as these contain natural nutrients that can help the plant grow. Distilled and filtered water can also be used if more natural options aren't available.
Chlorine Sensitivity
Common hollyhock is moderately resilient to chlorine. However, if you notice signs of yellowing leaves, this could indicate chlorine damage. Letting tap water sit out to dechlorinate before using it can be beneficial to avoid such issues.
Fluoride Sensitivity
Common hollyhock is not particularly sensitive to fluoride, but if using tap water with high fluoride content, it may be prudent to occasionally alternate with rainwater, if possible, to ensure the plant is not getting an excess.
Other Contaminant Sensitivity
Common hollyhock has no known sensitivity to other common contaminants. However, excessively hard water, containing high amounts of minerals like magnesium and calcium, can lead to problems such as leaf chlorosis.
Water Temperature
Common hollyhock prefers water at room temperature. Avoid watering with cold water to prevent shock.
Water Treatment
For tap water, it's beneficial to let it sit out overnight before using it, to allow for the evaporation of any chlorine. This is not a necessary step, but it can potentially improve the plant's health.
How Do Common Hollyhock's Watering Needs Change with the Seasons?
How to Water common hollyhock in Spring?
During spring, common hollyhock initiates its growth cycle. The soil should be kept moist, but not too wet, to allow the roots to obtain the necessary nutrients. Watering should occur early in the day to maximize absorption and minimize the risk of fungal growth caused by cooler temperatures in the evening. Avoid water logging the soil which can lead to root rot.
How to Water common hollyhock in Summer?
Performing well in full sunlight, common hollyhock will require consistent watering in the heat of summer to combat evaporation. Pay attention to if the surface soil has dried out, indicating a need for additional watering. On extremely hot days, consider watering in the morning and evening to ensure constant moisture, helping the plant to remain healthy and resist wilting.
How to Water common hollyhock in Autumn?
As autumn arrives, common hollyhock approaches its dormancy phase, slowing growth and reducing water requirements. The goal should be to gradually reduce watering, allowing the plant to adjust. Stop watering once the first frost hits to prevent the water from freezing inside the plant. Frozen water can damage the internal structures of the plant and hinder growth in the next cycle.
How to Water common hollyhock in Winter?
Winter is a rest period for common hollyhock, and under normal conditions, it may not require additional watering. However, if planted in containers and placed in a warmer environment, such as indoors, they might still require occasional watering. Ensure the soil at root level isn鈥檛 completely dry before watering, and avoid pooling to prevent root rot.
What Expert Tips Can Enhance Common Hollyhock Watering Routine?
Watering Schedule
Common hollyhocks prefer to be watered deeply and infrequently. A good rule of thumb is to give them a thorough watering once every 7-10 days, allowing the soil to dry out slightly between waterings.
Morning Watering
Water your common hollyhocks in the early morning to provide ample time for the foliage to dry before nightfall. This reduces the risk of disease caused by prolonged moisture on the leaves.
Water at the Base
When watering, direct the water at the base of the plant, aiming for the root zone. Avoid wetting the foliage as this can promote fungal diseases.
Mulching
Apply a layer of organic mulch around the base of the plant, like straw or wood chips. Mulch helps retain soil moisture, suppress weeds, and regulate soil temperature.
Avoid Overhead Watering
Instead of using sprinklers or overhead watering methods, use a soaker hose or drip irrigation system. This delivers water directly to the base of the plant, minimizing water waste and reducing the risk of leaf diseases.
Monitor Soil Moisture
Check the soil moisture levels by inserting your finger or a moisture meter into the soil. Common hollyhocks prefer their soil to be moderately moist, but not waterlogged. Adjust your watering frequency accordingly.
Watering During Heatwaves
During periods of intense heat or heatwaves, common hollyhocks may require more frequent watering. Monitor their moisture levels closely and increase watering if the soil becomes excessively dry.
Rainwater Harvesting
Take advantage of natural rainfall by collecting rainwater in containers or rain barrels. Use this harvested water to supplement your watering routine for common hollyhocks.
Signs of Thirst
If the leaves of your common hollyhock appear wilted or droopy, it may be a sign that the plant is thirsty. Water it immediately and adjust your watering frequency as needed.
Signs of Over-watering
Yellowing leaves, root rot, or mold growth around the base of the plant are signs of over-watering. If you see these symptoms, cut back on watering and ensure proper drainage.
Watering Stressed Plants
When common hollyhocks experience stress, such as from excessive heat or pest infestations, it's important to provide extra care. Deep watering and mulching can help alleviate stress and promote plant recovery.
Considering Hydroponics? How to Manage a Water-Grown Common Hollyhock?
Overview
Common hollyhock is a towering perennial plant, reaching up to 8 feet in height, and is commonly used in landscaping for its tall, colorful blooms. Hydroponics may provide an ideal alternative to traditional soil gardening for common hollyhock due to its faster growth rates, water efficiency and control over nutrient intake.
Optimal Hydroponic System
Common hollyhock can thrive in the ebb and flow (flood and drain) hydroponic system. This is because they enjoy periodic drying out, as continuous water logging can cause root rot. The ebb and flow system allows control over flooding and drying cycles, preventing such issues.
Nutrient Solution
Common hollyhock requires a balanced nutrient solution for optimal growth. The ideal pH is between 6.0 and 7.0. The nutrient solution should be changed every 2 to 3 weeks in a hydroponic setup. You may also need to adjust the EC (Electrical Conductivity) of your solution, between 1.2–2.0 can be a good starting point.
Common Challenges
In hydroponics, common hollyhock can suffer from root rot due to overwatering or poor aeration in the system. Pests, like aphids, can be a concern, but easily controlled in an indoor system. Yielding brightly colored flowers requires adequate light, therefore ensuring enough exposure or quality artificial light is essential.
Plant Health Monitoring
While growing common hollyhock hydroponically, look for signs such as yellowing leaves, stunted growth, or wilted flowers as they may indicate nutrient imbalances. It's also good practice to observe root health, whiteness indicating good health while brown or slimy roots may indicate root problems.
Environmental Adjustments
Adjustments to the hydroponic system must be made at various stages; the seedling stage requires a higher humidity level while mature common hollyhock prefer a lower humidity environment. In the blooming stage, providing a high phosphorous nutrient solution can help stimulate flower production.
Harvesting
Upon reaching the flowering stage, typically 12-14 weeks in optimal conditions, flowers can be harvested by gently cutting the flower stalk. Common hollyhock flowers throughout the summer. In a controlled hydroponic environment, you can manipulate lighting and nutrients to force blooming even in off-seasons.
Important Symptoms
Overwatering Symptoms of Common hollyhock
Common hollyhock is more susceptible to developing disease symptoms when overwatered because it prefers a soil environment with moderate humidity. Symptoms of overwatering include yellowing leaves, brown or black spots, root rot...
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Brown or black spots
Excessive watering can damage the plant's root system, making it vulnerable to fungal infections. The plant may develop dark brown to black spots that spread upwards from the lower leaves which are usually the first to be affected.
Root rot
Excess water in the soil can lead to the growth of harmful fungi and bacteria, causing the roots to rot and eventually kill the plant.
Soft or mushy stems
Excess water can cause stems to become soft and mushy, as the cells become waterlogged and lose their structural integrity.
Increased susceptibility diseases
Overwatering plants may become more susceptible and diseases as their overall health declines, weakening their natural defenses.
Solutions
1. Adjust watering frequency based on seasons and soil dryness. Wait for soil to dry before watering.2. Increase soil aeration by loosening surface and gently stirring with a wooden stick or chopstick.3. Optimize environment with good ventilation and warmth to enhance water evaporation and prevent overwatering.
Underwatering Symptoms of Common hollyhock
Common hollyhock is more susceptible to plant health issues when lacking watering, as it can only tolerate short periods of drought. Symptoms of dehydration include wilting, leaf curling, yellowing leaves...
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Wilting
Due to the dry soil and insufficient water absorption by the roots, the leaves of the plant will appear limp, droopy, and lose vitality.
Leaf curling
Leaves may curl inward or downward as they attempt to conserve water and minimize water loss through transpiration.
Increased susceptibility to pests and diseases
Underwatered plants may become more susceptible to pests and diseases as their overall health declines, weakening their natural defenses.
Dying plant
If underwatering continues for an extended period, the plant may ultimately die as a result of severe water stress and an inability to carry out essential functions.
Solutions
1. Thoroughly saturate soil with slow ring watering to ensure uniform and sufficient moisture for plants. 2. Increase air humidity with water trays or misting to slow leaf water evaporation. 3. Watering according to the recommended frequency.Adjust watering frequency based on seasons and soil dryness.
Watering Troubleshooting for Common Hollyhock
Why are my common hollyhock's leaves turning yellow and wilting?
Yellowing and wilting leaves could be a sign of overwatering. The common hollyhock does not like to sit in wet soil and prefers well-drained, moist soil. The solution is to reduce your watering frequency and ensure your plant is in a well-draining soil. Check the soil's moisture levels before each watering session, and only water when the top few inches of soil are dry.
Why does my common hollyhock appear stunted and underdeveloped?
This may be an issue of underwatering; common hollyhock requires a consistent watering schedule, especially in the growing season. If the plant lacks water, it can halt its growth to conserve resources. Solution: Establish a consistent watering routine, keeping the soil consistently moist but not waterlogged. A good practice is to water deeply and thoroughly but less frequently.
My common hollyhock has root rot, what should I do?
Root rot is the result of prolonged exposure to overly wet conditions, often due to overwatering. For common hollyhock, remove the affected roots, ensuring that you are removing all the rotted ones and leaving only healthy, firm roots. Repot the plant in fresh, well-draining soil and avoid overwatering in future to prevent this from happening again.
The buds are falling off my common hollyhock before they open, why is this happening?
This issue of bud drop is commonly affiliated with inconsistent or improper watering. Rapid changes in soil moisture levels can stress the common hollyhock and cause its buds to fall off before blooming. Keep a consistent watering schedule throughout the bloom period and water thoroughly each time, allowing the water to reach the deeper roots.
The leaves on my common hollyhock are curling up and turning brown, what's causing this?
Leaf curling and browning is often a symptom of a lack of water. Common hollyhock can be quite a thirsty plant and needs plenty of water, especially during hot weather or if it's situated in full sun. Ensure you're giving your plant regular, deep watering so that all the root zone gets a good soak. Too little water can cause dehydration leading to these symptoms.
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Lighting
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Requirements
Full sun
Ideal
Above 6 hours sunlight
Partial sun
Tolerance
About 3-6 hours sunlight
Watch how sunlight gracefully moves through your garden, and choose spots that provide the perfect balance of light and shade for your plants, ensuring their happiness.
Essentials
Thriving for the most part in areas with a lot of sun exposure, common hollyhock, a native plant of natural environments with abundant light, can also endure in spots with moderate sun. This versatile plant may suffer from hindered growth if the sunlight provided is either too scant or too abundant.
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Artificial lighting
Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
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Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
1. Choose the right type of artificial light: LED lights are a popular choice for indoor plant lighting because they can be customized to provide the specific wavelengths of light that your plants need.
Full sun plants need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants need 10-20W/sq ft.
2. Determine the appropriate distance: Place the light source 12-36 inches above the plant to mimic natural sunlight.
3. Determine the duration: Mimic the length of natural daylight hours for your plant species. most plants need 8-12 hours of light per day.
Important Symptoms
Symptoms of Insufficient Light in %s
Common hollyhock thrives in full sunlight and is commonly grown outdoors where it receives ample sunlight. When placed in rooms with inadequate lighting, symptoms of light deficiency may not be readily apparent.
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Small leaves
New leaves may grow smaller in size compared to the previous ones once they have matured.
Leggy or sparse growth
The spaces between leaves or stems of your common hollyhock may become longer, resulting in a thin and stretched-out appearance. This can make the plant look sparse and weak, and it may easily break or lean due to its own weight.
Faster leaf drop
When plants are exposed to low light conditions, they tend to shed older leaves early to conserve resources. Within a limited time, these resources can be utilized to grow new leaves until the plant's energy reserves are depleted.
Slower or no new growth
Common hollyhock enters a survival mode when light conditions are poor, which leads to a halt in leaf production. As a result, the plant's growth becomes delayed or stops altogether.
Lighter-colored new leaves
Insufficient sunlight can cause leaves to develop irregular color patterns or appear pale. This indicates a lack of chlorophyll and essential nutrients.
Solutions
1. To ensure optimal growth, gradually move plants to a sunnier location each week, until they receive at least 6 hours of direct sunlight daily. Use a south-facing window and keep curtains open during the day for maximum sunlight exposure and nutrient accumulation.2. To provide additional light for your plant, consider using artificial light if it's large or not easily movable. Keep a desk or ceiling lamp on for at least 8 hours daily, or invest in professional plant grow lights for ample light.
Symptoms of Excessive light in %s
Common hollyhock thrives in full sun exposure and can tolerate intense sunlight. With their remarkable resilience, symptoms of sunburn may not be easily visible, as they rarely suffer from it.
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Chlorosis
Chlorosis is a condition where the plant's leaves lose their green color and turn yellow. This is due to the breakdown of chlorophyll from excessive sunlight, which negatively affects the plant's ability to photosynthesize.
Sunscald
Sunscald occurs when the plant's leaves or stems are damaged by intense sunlight exposure. It appears as pale, bleached, or necrotic areas on the plant tissue and can reduce the plant's overall health.
Leaf Curling
Leaf curling is a symptom where leaves curl or twist under extreme sunlight conditions. This is a defense mechanism used by the plant to reduce its surface area exposed to sunlight, minimizing water loss and damage.
Wilting
Wilting occurs when a plant loses turgor pressure and its leaves and stems begin to droop. Overexposure to sunlight can cause wilting by increasing the plant's water loss through transpiration, making it difficult for the plant to maintain adequate hydration.
Leaf Scorching
Leaf scorching is a symptom characterized by the appearance of brown, dry, and crispy edges or patches on leaves due to excessive sunlight. This can lead to a reduction in photosynthetic capacity and overall plant health.
Solutions
1. Move your plant to the optimal position where it can receive abundant sunlight but also have some shade. An east-facing window is an ideal choice as the morning sunlight is gentler. This way, your plant can enjoy ample sunlight while reducing the risk of sunburn.2. It is recommended to trim off any completely dehydrated or withered parts of the plant.
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Temperature
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Just like people, each plant has its own preferences. Learn about your plants' temperature needs and create a comforting environment for them to flourish. As you care for your plants, your bond with them will deepen. Trust your intuition as you learn about their temperature needs, celebrating the journey you share. Lovingly monitor the temperature around your plants and adjust their environment as needed. A thermometer can be your ally in this heartfelt endeavor. Be patient and gentle with yourself as you explore your plants' temperature needs. Cherish your successes, learn from challenges, and nurture your garden with love, creating a haven that reflects the warmth of your care.
Essentials
Common hollyhock is indigenous to areas with temperatures of 68 to 95 °F (20 to 35 ℃). It craves warm summers and mild winters. However, to ensure successful growth, temperature alterations such as shade provision during sizzling summers might be necessary.
Regional wintering strategies
Common hollyhock has strong cold resistance, so special frost protection measures are usually not necessary during winter. However, if the winter temperatures are expected to drop below {Limit_growth_temperature}, it is still important to provide cold protection. This can be achieved by covering the plant with materials such as soil or straw. Before the first freeze in autumn, it is recommended to water the plant abundantly, ensuring the soil remains moist and enters a frozen state. This helps prevent drought and water scarcity for the plant during winter and early spring.
Important Symptoms
Symptoms of Low Temperature in Common hollyhock
Common hollyhock is cold-tolerant and thrives best when the temperature is above {Suitable_growth_temperature_min}. During winter, it should be kept above {Tolerable_growing_temperature_min}. When the temperature falls below {Limit_growth_temperature}, although there may not be any noticeable changes during winter, there may be a decrease in sprouting or even no sprouting during springtime.
Solutions
In spring, remove any parts that have failed to sprout.
Symptoms of High Temperature in Common hollyhock
During summer, Common hollyhock should be kept below {Suitable_growth_temperature_max}. When the temperature exceeds {Tolerable_growing_temperature_max}, the leaves of the plant may become lighter in color, prone to curling, susceptible to sunburn, and in severe cases, the entire plant may wilt and become dry.
Solutions
Trim away the sunburned and dried-up parts. Move the plant to a location that provides shade from the midday and afternoon sun, or use a shade cloth to create shade. Water the plant in the morning and evening to keep the soil moist.
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