Invasive & Nuisance Species

Invasive species are non-native plants and animals that spread rapidly causing ecological and economic harm. Common examples are the emerald ash borer, Norway maple, and Asian clam. Invasive species are usually spread by humans. Once established, they become increasingly difficult to manage. Early detection of invasives is key to containment and practical management.

Nuisance species may be native or non-native, and may cause ecological and economic harm. Common examples are poison ivy and Canadian geese.

Asian Longhorned Beetle

First found in New York in 1996, the Asian Longhorned Beetle is a serious threat to our maples and other hardwood trees.

What are those berries?

Exotic bush honeysuckle is perhaps the most widespread exotic invasive in the U.S. Widely dispersed by birds, it is now found in at least 38 states.

Emerald Ash Borer

Learn how to identify the Emerald Ash Borer, monitor your Ash trees, detect and report possible EAB in your trees, and more, with resources we've compiled on this site.

Oriental Bittersweet

Introduced in the 1860s as an ornamental and for erosion control, Oriental Bittersweet is a vine that smothers plants and uproots trees due to its weight.

Last updated May 19, 2015