Whether you're a rural landowner or a city dweller, you can help promote healthy Wisconsin forests. Learn the distributions, life cycles and management options for the pests, plants and diseases that impact them.
Newsletters, Factsheets and Identification Assistance
Resource listings for tree and insect identification, sick tree diagnostics and other information.
Learn how to prevent, detect and manage this disease of oak trees.
Learn more about invasive plants and insects in Wisconsin and how to slow their spread.
Heterobasidion root disease (HRD)
Learn how to prevent, detect and manage this disease common to pine and spruce.
Emerald Ash Borer
Learn more about this invasive insect, including identification, impact and management strategies.
Spongy Moth (Lymantria dispar)
Learn more about this invasive insect, including management, quarantine restrictions and regulations.
Learn how to identify, prevent and manage this invasive threat to forest and urban landscapes.
Learn the firewood rules and protect Wisconsin's trees from invading pests and diseases.
Asian longhorned beetle
Learn how to identify, prevent and manage this invasive threat to maples and other hardwoods.
Hemlock woolly adelgid
Learn about how this invasive pest impacts eastern hemlocks, and how to prevent its spread.
Bark beetles and associated issues
Get more information about the bark and ambrosia beetles found in Wisconsin.
Beech Bark Disease
Learn the signs and management strategies for this major threat to the American beech.
Forest tent caterpillar
Learn more about this leaf-eating caterpillar native to Wisconsin.