About Winter Moth
The winter moth is a non-native, invasive insect which has been found in Washington, Oregon and Massachusetts. The winter moth caterpillar is bright green, about 15mm in length an resembles an inchworm. It feeds on many different tree species, including but not limited to maple, oak, linden, ash, crabapple, apple, cherry, and spruce. The early stage caterpillar will bore into the foliar buds of the host tree prior to the tree leafing out, consuming the young leaves or leaving them heavily damaged before they unfold. Leaves will have holes or be virtually consumed. The most conspicuous evidence of winter moth infestation will be the caterpillar itself.
Host Trees for Winter Moth
Oaks, Maples, Basswood, Ash, Crabapples, Certain Spruces.
Treatments for Winter Moth
Learn More About Common Tree Pests & Treatments
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