Department of Environmental Conservation

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Forest Health

Frontal close-up photo of an Asian longhorned beetle
Asian longhorned beetle
photo: NYS Museum

The DEC Forest Health program is responsible for monitoring the ecological health and function of all of the forests of New York State. The program gathers, analyzes, and reports on tree pest and disease information for forest land owners and managers both public and private. The highest priority is placed on early detection of and rapid response to high-impact invasive species that may threaten the health of our forests.

Forest Health Issues

Learn about the biology, symptoms, hosts, and available control strategies of many of the insects and diseases that can harm trees and forests in New York State. Damage can also be caused by environmental factors.

Forest tent caterpillar
forest tent caterpillar

Quarantine: when movement of certain articles is restricted in order to prevent the spread of a pest, disease or invasive plant.

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