What action could I take to treat webworms? I cut out the affected spots last year but see I have more this year.
Anoka County Minnesota
This is probably the Fall Webworm. On a weekend road trip we noticed a huge number of webworm tents in many trees - this must be a good year for these critters!
By the time you see these structures, the caterpillars have done their work - chewing leaves in the trees. They usually don't cause long-term damage unless the tree becomes totally defoliated over a few years time. Their nests are considered unsightly, and are rather easy to cut out, but it only takes a couple of adult moths to lay enough eggs for an annual infestation of webworms.
Here is some information about possible controls:
I hope this is helpful. Please contact AaE again if you have further questions.