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Invasive Species

Hundreds of species of non-native (aka alien or exotic) invasive forest insects, diseases, plants, and other organisms are established in the United States. Some of these species have become invasive, spreading rapidly and causing significant economic and ecological impacts to the nation's forest and urban trees. Northern Research Station scientists work to understand the biology of invasive insects and diseases as well as possible controls, and develop tools that help everyone from land managers to homeowners make their trees healthier

Last Modified: November 9, 2015