Our hemlocks lack natural resistance to HWA, and HWA does not have natural predators in our country to keep its populations under control. All homeowners with hemlocks on their property need to be ...

If hemlock trees on your property show signs of hemlock woolly adelgid infestation, now is a good time to plan for spring treatment of this invasive species. Hemlock woolly adelgid, native to Asia, is ...

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 ...

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 ...

Since that time, a number of student projects have confirmed this pattern, but none have been successful in determining the mechanism by which Eastern Hemlocks inhibit the other species. During this ...

GRAND RAPIDS, Mich. (WOOD) — If you have hemlock trees on your property, the time to protect them from a deadly invasive insect is approaching. The Michigan Department of Natural Resources says ...

Today, park officials estimate that 95 percent of Shenandoah’s hemlocks have succumbed to the adelgid. To preserve Shenandoah’s remaining hemlocks, a handful of park employees inject insecticide into ...