Eastern hemlock trees are a vital foundation species in Pennsylvania forests, supporting the ecosystem and enhancing aesthetics. The hemlock woolly adelgid (HWA), an invasive insect, poses a ...

© 2025 The University System of Georgia and the University of North Georgia. UNG follows the section 508 Standards and WCAG 2.1 for web accessibility. If you require ...

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 ...