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Maidenhair tree > Leaf gall
What Causes Leaf Gall in Maidenhair tree?
Maidenhair tree, also known as Kew Ginkgo
Leaf gall is a disease negatively affecting Maidenhair tree's appearance and growth, caused mainly by aphids. Manifested as raised spots on leaves, it inhibits photosynthesis. Cure involves cultural, non-pesticide, and pesticide controls, with varying infection and lethal rates based on care and prevention measures.

Symptom Analysis

Symptoms manifest primarily on leaves as raised spots or bumps, varying in size. These are galls, where aphids reside. Discoloration, yellowing, or premature leaf drop may occur if severely infested.
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What Causes Leaf gall Disease on Maidenhair tree?

Insects
Aphids, specifically Ginkgoococcus, are the primary cause, injecting their saliva into Maidenhair tree, which initiates gall formation.
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How to Treat Leaf gall Disease on Maidenhair tree?

Non pesticide
Physical removal: Remove and dispose of affected leaves to control spread.

Predatory insects: Introduce beneficial insects like ladybugs and lacewings that prey on aphids.
Pesticide
Insecticidal soap: Apply to affected areas following label instructions.

Systemic insecticides: These reach the leaf interior, killing the residing aphids.

How to Prevent Leaf gall on Maidenhair tree?

Monitor regularly
Check Maidenhair tree regularly for aphids or initial gall formations, particularly in peak seasons.
Proper spacing
Ensure trees are properly spaced to prevent easy spread between plants.
General health maintenance
Provide proper water, nutrition, and care for Maidenhair tree to enhance its resistance to pests and diseases.
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When is Leaf gall Most Active Period on Maidenhair tree?

Leaf gall is most active in late spring to summer, corresponding to Maidenhair tree's growing season, when aphid populations are highest and leaf tissue is tender.

Infectivity

Aphids rapidly reproduce, spreading easily from tree to tree, especially in close proximity.

Lethality

Gall damage is largely cosmetic. However, heavy infestations can weaken Maidenhair tree and may lead to secondary infections.

FAQs on Maidenhair Tree

What is the impact of Leaf gall on Maidenhair tree's growth and development?
Leaf gall primarily affects Maidenhair tree cosmetically but heavy infestations can hinder photosynthesis, weaken the tree, and can potentially lead to secondary infections.
Can Leaf gall on Maidenhair tree be cured without pesticides?
Yes, non-pesticide treatments such as manual removal of gall-infested leaves and introduction of predatory insects are effective in managing Leaf gall.
How can I prevent Leaf gall on Maidenhair tree?
Prevention measures include regular monitoring of the tree, ensuring proper plant spacing, and general health maintenance to enhance Maidenhair tree's resistance.
Is Leaf gall lethal to Maidenhair tree?
Typically, Leaf gall is not lethal to Maidenhair tree. However, heavy infestations can weaken the tree and predispose it to other diseases.
How infectious is Leaf gall?
Leaf gall is highly infectious due to aphids' rapid reproduction and easy spread, especially among closely spaced trees.
What time of year is Leaf gall most active on Maidenhair tree?
Leaf gall is most active in late spring to summer, during Maidenhair tree's growing season and when aphid populations are highest.
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