The Hemlock Woolly Adelgid (HWA) is an aphid-like insect that feeds mainly upon Hemlock tree species. HWA was introduced into the eastern United States from Japan in 1951 by the import of infected ...

Hemlock woolly adelgid has been moving north along Lake Michigan since 2015 and is now present in Allegan, Antrim, Ottawa, Muskegon, Oceana, Mason, Benzie, Leelanau and Washtenaw counties.

Currently, the hemlock trees in Tennessee's Cherokee National Forest and across the Eastern United States are threatened by the hemlock woolly adelgid, a tiny invasive insect that infests hemlock ...