hemlock wooly adelgid

Hemlock woolly adelgid (HWA), Adelges tsugae, is an invasive insect that causes tree decline and mortality of eastern hemlock (Tsuga canadensis) and Carolina hemlock (Tsuga caroliniana) in eastern North America. It was first detected in Virginia in 1951 and has since spread through much of the eastern United States and into southern Canada.

Since November of 2020, there have been a number of new infestations of hemlock woolly adelgid (HWA) discovered in Ohio. These discoveries have been made in Mahoning, Summit, Jefferson, and Columbiana counties. The newest find is in Kent, Ohio located in Portage County. This brings the total amount of known HWA-infested counties in Ohio to 17. The question for the homeowner and/or landscaper is: What should I do? The short answer is: Report it!