Canadian geese

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.

Swallow Wort

Areas that have been cleared of swallow-wort should be planted with rapid-growing native species to avoid introduction of other invasive plants.

Giant Hogweed

Giant hogweed is one of New York's most striking and dangerous invasive plants. Learn how to recognize and manage it safely on our site.

Last updated November 24, 2019