Cornell Cooperative Extension

Warren County

Spongy moth

The spongy moth is one of the most important forest pests in the Northeast. The caterpillars feed on leaves of the forest, shade, ornamental and fruit trees, and shrubs. A single defoliation can kill some evergreens, but usually, two or more defoliations are needed to kill hardwoods.

Cornell University Fact Sheet

Forest Health Fact Sheet

Spongy Moth Management Guide for Homeowners

Btk Pesticide Treatment Info

How to Care for Defoliated Trees

How to Properly Water Your Trees


Last updated November 15, 2022

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