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Common yarrow 'Lilac Beauty'
Common yarrow 'Lilac Beauty'
Common yarrow 'Lilac Beauty'
Achillea millefolium 'Lilac Beauty'
Also known as : Milfoil 'Lilac Beauty', Nosebleed plant 'Lilac Beauty', Devil's nettle 'Lilac Beauty', Soldier's woundwort 'Lilac Beauty'
Hardiness Zones
Hardiness Zones
4 to 9
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Care Guide for Common yarrow 'Lilac Beauty'

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Watering Care
Watering Care
Details on Watering Care Watering Care
Soil Care
Soil Care
Chalky, Clay, Acidic, Neutral, Alkaline
Details on Soil Care Soil Care
Ideal Lighting
Ideal Lighting
Full sun, Partial sun
Details on Sunlight Requirements Ideal Lighting
Ideal Temperature
Ideal Temperature
4 to 9
Details on Temperature Ideal Temperature
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Common yarrow 'Lilac Beauty'
Sunlight
Sunlight
Full sun
Hardiness Zones
Hardiness Zones
4 to 9
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Key Facts About Common yarrow 'Lilac Beauty'

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Attributes of Common yarrow 'Lilac Beauty'

Lifespan
Perennial
Plant Type
Herb
Bloom Time
Summer, Early fall
Plant Height
80 cm
Spread
80 cm
Leaf Color
Green
Flower Color
Purple
Pink
Violet
Stem Color
Green
Purple
Leaf type
Deciduous
Ideal Temperature
5 - 35 ℃

Scientific Classification of Common yarrow 'Lilac Beauty'

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Common Pests & Diseases About Common yarrow 'Lilac Beauty'

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Common issues for Common yarrow 'Lilac Beauty' based on 10 million real cases
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AI-powered plant doctor helps you diagnose plant problems in seconds.
Thrips
Thrips are tiny pests affecting 'Common yarrow 'Lilac Beauty'', causing discoloration, deformities, and potential growth stunting. Their activity peaks in warm, dry conditions and can escalate if left unmanaged, impacting the plant's aesthetics and health.
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.
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.
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.
close
plant poor
Thrips
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Thrips Disease on Common yarrow 'Lilac Beauty'?
What is Thrips Disease on Common yarrow 'Lilac Beauty'?
Thrips are tiny pests affecting 'Common yarrow 'Lilac Beauty'', causing discoloration, deformities, and potential growth stunting. Their activity peaks in warm, dry conditions and can escalate if left unmanaged, impacting the plant's aesthetics and health.
Symptom Analysis
Symptom Analysis
On 'Common yarrow 'Lilac Beauty'', symptoms include silver-white discoloration, speckled leaves, and twisted or curled foliage. Flowers of 'Common yarrow 'Lilac Beauty'' may also exhibit distorted growth or color changes.
What Causes Thrips Disease on Common yarrow 'Lilac Beauty'?
What Causes Thrips Disease on Common yarrow 'Lilac Beauty'?
1
Thrips
Small, slender insects that feed on 'Common yarrow 'Lilac Beauty'' by piercing and sucking out cell contents, leading to visible damage.
How to Treat Thrips Disease on Common yarrow 'Lilac Beauty'?
How to Treat Thrips Disease on Common yarrow 'Lilac Beauty'?
1
Non pesticide
Regular monitoring: Check 'Common yarrow 'Lilac Beauty'' weekly for early signs of thrips to manage infestations promptly.

Water spray: Use a strong water jet to dislodge thrips from 'Common yarrow 'Lilac Beauty'', reducing their population.

Introduce predators: Introducing natural predators like ladybugs can help control thrip populations naturally.
2
Pesticide
Insecticidal soaps: Apply insecticidal soaps which can suffocate thrips without harming 'Common yarrow 'Lilac Beauty''.

Systemic insecticides: Use systemic insecticides for severe infestations, as these are absorbed by 'Common yarrow 'Lilac Beauty'' and can control thrips feeding internally.
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Aged yellow and dry
plant poor
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.
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qrcode
Scan the QR code with your phone camera to download the app
Brown spot
plant poor
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.
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
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.
Continue reading in our app - it's better
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Scan the QR code with your phone camera to download the app
care_scenes

More Info on Common Yarrow 'lilac Beauty' Growth and Care

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Feedback
Common Pests & Diseases
Thrips
Thrips are tiny pests affecting 'Common yarrow 'Lilac Beauty'', causing discoloration, deformities, and potential growth stunting. Their activity peaks in warm, dry conditions and can escalate if left unmanaged, impacting the plant's aesthetics and health.
Read More
Dodder
Dodder is a parasitic plant that severely affects 'Common yarrow 'Lilac Beauty''. It extracts nutrients from 'Common yarrow 'Lilac Beauty'', leading to stunted growth, reduced vigor, and potentially plant death if left unmanaged.
Read More
Spider mite
Spider mites primarily attack 'Common yarrow 'Lilac Beauty'', resulting in discolored foliage, reduced growth, and potential death if left unchecked. These pests thrive in hot, dry conditions and can infest rapidly.
Read More
Scale insect
Scale insects negatively impact 'Common yarrow 'Lilac Beauty'' by sucking sap, causing yellowing leaves, stunted growth, and potentially plant death. These pests thrive in warm, dry environments, particularly troubling for 'Common yarrow 'Lilac Beauty''.
Read More
Flower withering
Flower withering is a disease that particularly affects 'Common yarrow 'Lilac Beauty'', causing its vibrant lilac blooms to droop, fade, and prematurely die off. This disease not only impairs the plant's aesthetic value but could also weaken its overall health and lifespan.
Read More
Aphid
Aphids are common pests that attack 'Common yarrow 'Lilac Beauty'', draining sap and weakening the plant. Infestations are marked by distorted growth and a reduction in the plant's overall vigor.
Read More
Mealybug
Mealybug disease significantly impacts Common yarrow 'Lilac Beauty', causing discolored leaves, stunted growth, and eventual wilting. Effective management involves both pesticide and non-pesticide interventions.
Read More
Dark spots
Dark spots on Common yarrow 'Lilac Beauty' predominantly affect its aesthetic value and overall health, manifesting primarily as dark brown or black patches on foliage. Prompt management is crucial to prevent spread and minimize damage.
Read More
Flower wilting
Flower wilting in 'Common yarrow 'Lilac Beauty'' refers to the progressive deterioration of the plant's structure, leading to drooping and discoloration. This condition significantly affects the plant's aesthetics and vitality.
Read More
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About
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More About How-Tos
Common yarrow 'Lilac Beauty'
Common yarrow 'Lilac Beauty'
Common yarrow 'Lilac Beauty'
Achillea millefolium 'Lilac Beauty'
Also known as: Milfoil 'Lilac Beauty', Nosebleed plant 'Lilac Beauty', Devil's nettle 'Lilac Beauty', Soldier's woundwort 'Lilac Beauty'
Hardiness Zones
Hardiness Zones
4 to 9
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Care Guide for Common yarrow 'Lilac Beauty'

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Key Facts About Common yarrow 'Lilac Beauty'

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Feedback
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Attributes of Common yarrow 'Lilac Beauty'

Lifespan
Perennial
Plant Type
Herb
Bloom Time
Summer, Early fall
Plant Height
80 cm
Spread
80 cm
Leaf Color
Green
Flower Color
Purple
Pink
Violet
Stem Color
Green
Purple
Leaf type
Deciduous
Ideal Temperature
5 - 35 ℃
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Scientific Classification of Common yarrow 'Lilac Beauty'

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Common Pests & Diseases About Common yarrow 'Lilac Beauty'

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Common issues for Common yarrow 'Lilac Beauty' based on 10 million real cases
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Plant disease auto-diagnose & prevention
AI-powered plant doctor helps you diagnose plant problems in seconds.
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Thrips
Thrips are tiny pests affecting 'Common yarrow 'Lilac Beauty'', causing discoloration, deformities, and potential growth stunting. Their activity peaks in warm, dry conditions and can escalate if left unmanaged, impacting the plant's aesthetics and health.
Learn More About the Thrips 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 About the Aged yellow and dry 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 About the Brown spot 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
close
plant poor
Thrips
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Thrips Disease on Common yarrow 'Lilac Beauty'?
What is Thrips Disease on Common yarrow 'Lilac Beauty'?
Thrips are tiny pests affecting 'Common yarrow 'Lilac Beauty'', causing discoloration, deformities, and potential growth stunting. Their activity peaks in warm, dry conditions and can escalate if left unmanaged, impacting the plant's aesthetics and health.
Symptom Analysis
Symptom Analysis
On 'Common yarrow 'Lilac Beauty'', symptoms include silver-white discoloration, speckled leaves, and twisted or curled foliage. Flowers of 'Common yarrow 'Lilac Beauty'' may also exhibit distorted growth or color changes.
What Causes Thrips Disease on Common yarrow 'Lilac Beauty'?
What Causes Thrips Disease on Common yarrow 'Lilac Beauty'?
1
Thrips
Small, slender insects that feed on 'Common yarrow 'Lilac Beauty'' by piercing and sucking out cell contents, leading to visible damage.
How to Treat Thrips Disease on Common yarrow 'Lilac Beauty'?
How to Treat Thrips Disease on Common yarrow 'Lilac Beauty'?
1
Non pesticide
Regular monitoring: Check 'Common yarrow 'Lilac Beauty'' weekly for early signs of thrips to manage infestations promptly.

Water spray: Use a strong water jet to dislodge thrips from 'Common yarrow 'Lilac Beauty'', reducing their population.

Introduce predators: Introducing natural predators like ladybugs can help control thrip populations naturally.
2
Pesticide
Insecticidal soaps: Apply insecticidal soaps which can suffocate thrips without harming 'Common yarrow 'Lilac Beauty''.

Systemic insecticides: Use systemic insecticides for severe infestations, as these are absorbed by 'Common yarrow 'Lilac Beauty'' and can control thrips feeding internally.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
close
Aged yellow and dry
plant poor
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.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
close
Brown spot
plant poor
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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unlimited guides at your fingertips...
close
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.
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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More Info on Common Yarrow 'lilac Beauty' Growth and Care

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Common Pests & Diseases
Thrips
Thrips are tiny pests affecting 'Common yarrow 'Lilac Beauty'', causing discoloration, deformities, and potential growth stunting. Their activity peaks in warm, dry conditions and can escalate if left unmanaged, impacting the plant's aesthetics and health.
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Dodder
Dodder is a parasitic plant that severely affects 'Common yarrow 'Lilac Beauty''. It extracts nutrients from 'Common yarrow 'Lilac Beauty'', leading to stunted growth, reduced vigor, and potentially plant death if left unmanaged.
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Spider mite
Spider mites primarily attack 'Common yarrow 'Lilac Beauty'', resulting in discolored foliage, reduced growth, and potential death if left unchecked. These pests thrive in hot, dry conditions and can infest rapidly.
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Scale insect
Scale insects negatively impact 'Common yarrow 'Lilac Beauty'' by sucking sap, causing yellowing leaves, stunted growth, and potentially plant death. These pests thrive in warm, dry environments, particularly troubling for 'Common yarrow 'Lilac Beauty''.
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Flower withering
Flower withering is a disease that particularly affects 'Common yarrow 'Lilac Beauty'', causing its vibrant lilac blooms to droop, fade, and prematurely die off. This disease not only impairs the plant's aesthetic value but could also weaken its overall health and lifespan.
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Aphid
Aphids are common pests that attack 'Common yarrow 'Lilac Beauty'', draining sap and weakening the plant. Infestations are marked by distorted growth and a reduction in the plant's overall vigor.
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Mealybug
Mealybug disease significantly impacts Common yarrow 'Lilac Beauty', causing discolored leaves, stunted growth, and eventual wilting. Effective management involves both pesticide and non-pesticide interventions.
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Dark spots
Dark spots on Common yarrow 'Lilac Beauty' predominantly affect its aesthetic value and overall health, manifesting primarily as dark brown or black patches on foliage. Prompt management is crucial to prevent spread and minimize damage.
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Flower wilting
Flower wilting in 'Common yarrow 'Lilac Beauty'' refers to the progressive deterioration of the plant's structure, leading to drooping and discoloration. This condition significantly affects the plant's aesthetics and vitality.
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