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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.
2022 Forest Health Highlights
Read the annual Forest Health Highlights Report.
Plant and pest quarantines
See quarantines issued by the Department of Agriculture and Rural Development.
View and report Heterobasidion root disease locations
View and enter a report into our interactive map.
View and report oak wilt locations
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.