Wooly Hemlock Adelgid bio controls

photo credit Scott Bradley Hesson with permission

Shenandoah National Park has seen its fair share of pests over the last 35 years.

The Wooly Hemlock Adelgid (HWA)has been one of the most challenging.

In fact, park staff have treated and protected over 32,500 hemlocks since 2005.

The Park has been working closely with Virginia Tech to release predatory beetles, bio controls, to help combat HWA in non-treated hemlock areas.

The long-term goal is for these predatory beetles to provide gradual suppression of HWA thereby allowing the Park to become less and less reliant on pesticides.

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