Winter Moth Caterpillar. Note the resemblance to the inchworm.
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
Trees with Winter Moth can be treated with: TREE-äge®, ACE-jet or AzaSol™.
Learn More About Common Tree Pests & Treatments
- Click here to view the entire Pocket Guide and order your copy today!
*Important: Always read and follow label instructions before buying or using these products. The instructions contain important conditions of sale, including limitations of warranty and remedy. TREE-äge® Insecticide is a Restricted Use Pesticide and must only be sold to and applied by a state certified applicator. TREE-äge® is not registered for use in all states. Please check with your state or local extension service prior to buying or using this product. TREE-äge® is a registered trademark of Arborjet, Inc.
