Canadian geese are a common nuisance species in our area.

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.

Hemlock wooly adelgid

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.

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Bush honeysuckle

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.

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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.

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Asian longhorn beetle

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.

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Japanese stiltgrass

Japanese Stiltgrass

Thought to have been introduced as packing material in crates from China, Japanese stiltgrass can grow in a variety of habitats.

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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.

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Contact

Dona Crawford
Community Horticulture Program Coordinator
dm282@cornell.edu
(845) 340-3990 x335

Last updated September 28, 2016