Michigan State University Extension
Ornamental Plants plus Version 3.0 - 00001761
11/12/99
Fall Webworm
The nest of fall webworm are a common part of the
landscape in late summer.
Eggs are laid in the spring and the larvae hatch out
and go through a number of stages of development. The
larvae change color but always have black spots and are
hairy. The insects feed inside a web that can become
fairly large by summer's end.
It is the objectionable appearance of the nest that causes
concern. The insects rarely cause serious harm to the
host.
Small nests can be pruned out of the tree when noticed.
The nests are often burned out but the burning can be more
harmful to the tree than the insect injury.
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This file was generated from data base ZZ on 01/19/00.
Data base ZZ was last revised on 11/12/99.
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