Maple Leaf growth/insect?

Asked June 1, 2020, 3:06 PM EDT

Can anyone tell me what is on the Maple leaves in the photo and what to do about it (if anything)?

Hennepin County Minnesota

1 Response

It is a maple leaf gall. They are really more unsightly that troublesome. Here is some more info. https://extension.umn.edu/yard-and-garden-insects/insect-and-mite-galls