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.

Poison Ivy

Eastern poison ivy is expected to become more widespread in Central New York due to global climate change. Learn how to identify it, here.

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.

Common Reed

Common reed can rapidly form dense stands of stems which crowd out or shade native vegetation in inland and estuary wetland areas.

Hemlock woolly adelgid (Adelges tsugae) -adult

Hemlock Pest

The Hemlock Woolly Adelgid lives and feeds on hemlock trees. Infested trees can die within 2 years, although 10-12 years is more common.

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.

Bed Bugs

Bed Bugs are small insects that can inhabit bedrooms and hotel rooms. They feed on blood and their bites can cause a rash. Learn how to identify and manage them, here.