Bugs Eating Tree Leaves

Asked July 17, 2017, 8:10 PM EDT

I noticed last year that the tree in my back yard was losing a lot of leaves that had been eaten. It started again this year and I've attached picture of the bugs that are all over the leaves. I'm not sure what they are and what I can do to get rid of them. Thanks, David

Ramsey County Minnesota insect damage trees horticulture

1 Response

Your tree has Japanese beetles. Grubs feed on the roots of grass and adults feed on the foliage of more than 300 plant species. Their top favorites are grape, cherry, apple, rose, raspberry and linden. Defoliation of well established, healthy lindens is usually not fatal unless the tree is in poor health. The foliage of recently planted and high-value trees can be protected with a soil-drench application of a systemic insecticide, such as imidacloprid (Bayer Advanced Tree and Shrub Insect Control and other products). To be effective, treatments must be made several weeks ahead of beetle emergence. http://www.extension.iastate.edu/article/yard-and-garden-japanese-beetles Japanese beetle traps will not protect your tree. "While these traps can capture an impressive number of beetles, the traps are attracting more beetles than they catch. Research has shown that when these traps are used in home gardens, damage is not reduced but in fact is likely to increase. " The following blog has are most current recommendation for Japanese beetle control. http://blog-yard-garden-news.extension.umn.edu/2017/07/dealing-with-japanese-beetles.html