Submitted by Erin Mester Call them one of “America’s Most Wanted” invasive pests: the hemlock woolly adelgid (HWA). After arriving here from Asia in the early 1950’s, these pesky aphid-like insects have devoured their way through millions of hemlock trees and left a trail of “ghosts” through the forest. Hemlocks grow throughout the southern Appalachians [...]
↧