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Protecting Michigan's forests
Protecting the health of Michigan's forests is a challenging task that requires collaboration. Our forest health professionals work with other state and federal agencies and universities to prevent, evaluate and manage the occurrence and impacts of both native and exotic forest insects and diseases. Email the forest health team with questions about pests and diseases.
Read the annual Forest Health Highlights Report.
View and enter a report into our interactive map.
Seeing spots? It could be spongy moth.
The sight of red-and-blue spotted caterpillars munching on backyard trees is a sure sign of spongy moth (lymantria dispar dispar,) an invasive species formerly known as gypsy moth. There are steps you can take to protect trees and minimize the damage done by these hungry pests.