While very hungry, the webworm caterpillar won’t harm your trees
It’s the fall webworm that’s eating your trees from the comfort and security of webby nests.
The greenish larvae’s appetite is huge and undiscriminating, extending to 636 different species of trees. Redbuds, walnut, hickory, fruit trees and some maples are favorites of these fuzzy worms.
Late summer through early fall, when the larvae are most active, is prime time to spot webworms chowing down.
The webs they spin over foliage give them netted protection against predators as they feed.