The invasive insect hemlock woolly adelgid has been spotted in many areas in northern Michigan.It's harmful to our native ...

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 ...

The hemlock woolly adelgid (HWA), a small invasive insect, poses a significant threat to eastern hemlock forests in North America. This pest feeds on the sap of hemlock trees, leading to tree ...

Hemlock woolly adelgid poses a significant threat to Eastern Hemlock trees in Michigan — an infestation can kill a large, otherwise healthy tree in less than a decade. Properties within 10 miles ...

Then, the hemlock woolly adelgid got busy doing what it does best: literally sucking the life out of some of the park’s most majestic trees. What followed has been an epic battle between one of ...

According to Walton and Nelson, research has shown that very cold temperatures 20 below zero or massive temperature drops can kill off hemlock woolly adelgid. “There is some mortality about up ...