What Are Gypsy Moths?
Gypsy moths are actually caterpillars that feed on the leaves of many different trees and ornamental shrubs in the spring and early summer. These caterpillars are capable of consuming large amounts of foliage quickly, causing severe defoliation to even very large trees. Their presence can also be a nuisance, with unattractive, tan egg cases on stems of leaves.
Damage by Gypsy Moths
Trees attacked by gypsy moths can become weakened and susceptible to borers and severe winter temperatures. While healthy, unstressed hardwoods can withstand a single defoliation without serious damage, evergreens are often killed by just one complete defoliation. Since each gypsy moth egg mass contains as many as a thousand eggs, a population can increase to a damaging level in a short time.