webby bug nests

Asked September 12, 2017, 12:05 PM EDT

My neighbor has at least 4 huge webs full of something(bugs of some kind). I am concerned that they may harm or destroy other peoples trees when they hatch or what ever they do to move on. I am attaching pics of these webs in hope that you can either give me information to give the owners of this property, or to relieve my fears. Thanks for any and all help you can give me.

Anoka County Minnesota fall webworm horticulture

1 Response

Most likely these are fall webworms:
http://blog-yard-garden-news.extension.umn.edu/2014/08/fall-webworms-are-active-now.html

While unsightly, they don't significantly harm the tree. The adult is a moth that also does no harm to the trees.