Most insecticides will not penetrate the silken tent or net. The tent needs to be broken before the chemical is applied.
Another control method is to remove the branch and destroy the nest.
Fall webworms will fall to the ground and pupate during the winter. Damage to trees is minimal and most plants re-leaf the following spring.
See: Bagworms, Eastern tent caterpillar
Articles in this collection were copyrighted 1995 by the Board of Trustees of the University of Illinois. For full copyright information about the articles in this encyclopedia, click here.