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 ...

Big picture view: One invasive species, the elongate hemlock scale ... If you suspect a tree or other greenery might be infested with an invasive insect or disease, you’re encouraged to contact ...