Overview info and resource documents for the hemlock woolly adelgid, originally from Asia, which was first discovered in the eastern U.S. in the 1950’s. It has since spread throughout the range of hemlock in the East, and caused extensive mortality of mature hemlock – especially in the Appalachian Mountains.

Hemlock trees in eastern forests are late successional tree species that provide shade for the forest understory. Globally, there are ten hemlock species, with populations located in Asia and eastern and western North America12. Eastern hemlock (Tsuga canadensis) and Carolina hemlock (Tsuga caroliniana) grow in the eastern U.S. These trees have great ecological and cultural value in forests. However, the invasive hemlock woolly adelgid (Adelges tsugae or HWA) is decimating hemlock populations throughout much of the trees’ native range, altering landscapes, and threatening these iconic tree species in both rural and urban areas.

Georgia’s original Forest Action Plan was produced with contributions from many program leaders of the Georgia Forestry Commission, Georgia Department of Natural Resources and U.S. Forest Service. Content contributors included Dr. Jon Ambrose, Constance Buford, Joe Burgess, Scott Thackston, Devon Dartnell, David Dickinson, Frank Sorrells, Ken Parker, Gary White, Scott Griffin, Josh Love, Joan Scales, Jim Ozier, Dru Preston, Dick Rightmyer, Buford Sanders and Risher Willard. Liz Kramer, University of Georgia College of Agriculture and Environmental Sciences contractor, conducted the GIS analyses. Final document design and production was accomplished by Wendy Burnett, Kassie Keck and Stasia Kelly. Development and publication of this document was assisted by a grant from the National Association of State Foresters.