Leaf Lovers Chewed edges or holes on maple leaves are usually signs of a caterpillar pest. Other leaf-eating bugs that infest maple trees include tiny, pear-shaped aphids, black and red boxelder bugs and bronze-colored Japanese beetles.

How do I get rid of bugs on my maple tree?

Spray tree with insecticidal soap or castor oil and spray the soil around the tree with a natural bacteria that will target the grubs. An application of milky spore or Bacillus thuringiensis will usually rid the soil of grubs.

What do you spray on maple trees for bugs?

Prevention & Treatment: The most effective control is to replant with resistant trees. Spraying three times at two-week intervals with a copper-based fungicide, mancozeb, chlorothalonil, or thiophanate methyl starting when the leaves begin to unfurl in spring will provide control (see Table 1 for specific products).

What causes holes in maple tree leaves?

Holes in tree leaves are often caused by wind tatter, herbicide injury and fungal disease. This is what I’ve been seeing in samples brought to the Extension office. In most cases, there is still enough green leaf surface left for photosynthesis to occur and trees are not adversely affected.

What type of insect attacks maple trees?

Carpenterworm. Carpenterworms (Prionoxystus robiniae) are wood-boring insects that attack maple trees. As one of the most prevalently attacked trees, maples may suffer severe damage from this tree borer infestation.

What is pyrethrum spray?

Pyrethrin is an insecticide that kills a wide range of insect pests including ants, mosquitoes, moths, flies and fleas. Pyrethrin kills off insects almost instantly upon contact. This means pyrethrin-based sprays are often considered compliant for organic production, unlike many synthetic pesticides.

When should you spray trees for aphids?

You will need to spray your trees several times before the spring to destroy aphid eggs and repel mature aphids. Neem Oil will not kill beneficial insects with hard shells and bees.

How do you treat maple mites?

Treatment is rarely justified. Because eriophyid gall mites crawl to the bark to spend the winter, trees could then be sprayed to suppress the mites there. By waiting until the leaves have fallen, it is easier to cover the bark thoroughly and much less pesticide will be needed.

Will gall mites go away?

Oftentimes, you’ll find that gall mite infestations will go away on their own once the mites go back into the tree. In the case of the fuchsia gall mite, the best way to rid of the infestation is to simply cut the infected leaves and branches from the plant.

How do you treat holes in leaves?

Leaf miners burrow twisting tunnels across leaves. For both, treat with insecticidal soap or horticultural oil. Sucking insects poke tiny holes in leaves and draw the juices out of them. Common sucking insects include aphids, squash bugs, and spider mites.

What is drilling holes in my maple tree?

Borers are insects that cause damage in plants by “boring” holes into them. Carpenterworm infestations are recognizable due to their tendency to produce sawdust as they feed on maple wood; they also pupate into large moths that closely resemble the familiar sphinx moth.

How do you treat anthracnose on a maple tree?

The following products are labeled for use against anthracnose of maple: copper hydroxide + mancozeb, mancozeb and propiconazole. The first application should be made at or just before bud break to protect new growth from initial infection in spring.

What do you spray a red maple tree with?

Spray red maples with liquid lime sulfur, using a hand sprayer on small trees and a pressure sprayer on large trees. Only spray trees that have no new leaf growth, as leaf appearance indicates that the tree is not dormant.

What insect eats red maple leaves?

Maple shoot borer (also known as maple tip moth and maple twig borer) This moth usually attacks red or Freeman maples but can also be found in sugar maples. It can be a serious pest in nursery production, where its tunneling can cause dieback and permanent disfigurement of the plant.

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