Help Fight the Spread of Hemlock Woolly Adelgid

Posted on: June 15th, 2018 by Brent Gotsch
White Woolly egg ovisacs are an indicator for hemlock woodly adelgid infestation

White woolly egg ovisacs are an indicator of hemlock woolly adelgid infestation


Hemlock Woolly Adelgid (HWA) is a non-native invasive insect that has killed millions of hemlock trees across the eastern United States. In recent years it has been devastating in the Catskill Mountain region and threatens not only hemlock trees, but plants and animals that rely on hemlocks for habitat.

Hemlocks are an important tree bordering mountain streams. Their branches and the spread and distribution of needles keep most of the sunlight from reaching the ground, creating shade and drastically reducing stream temperatures. Trout and other native species of fish rely on cold mountain streams to survive.

Researchers from Cornell University’s Department of Natural Resources are using biological controls such as predator insects to help stop the spread of HWA. Groups such as Catskill Mountainkeeper and the Catskill Regional Invasive Species Partnership (CRISP) are providing education and outreach to let people know about the dangers HWA poses to forests and streams.

Be sure to watch this video from Catskill Mountainkeeper and learn more about what you can do to help stop the spread of this serious forest pest.

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