Maple Tree question - disease?

Asked July 27, 2017, 10:31 PM EDT

My next door neighbor's maple leaf tree is dropping leaves like crazy in the last few weeks and the leaves look like the attached - almost a lacey look. Is this a disease and can it spread to my trees? Can anything be done to stop it? Is the tree dying?

Ramsey County Minnesota maple trees horticulture

1 Response

The damage that leaf is showing is called skeletonization. Typically, it is caused by insects feeding between the veins of the leaves. While many insects cause this kind of damage, Japanese beetles would be high on a list of possibilities. Usually these insects come and go and while the damage might be alarming, a healthy deciduous tree can withstand even a complete defoliation. Read here:
https://www.extension.umn.edu/garden/insects/find/japanese-beetles/
https://www.extension.iastate.edu/article/yard-and-garden-summer-trees