The Hemlock Woolly Adelgid (HWA) was first introduced in the western states in 1924. Native to Asia, the hemlock woolly adelgid (Adelges tsugae) is a small, aphidlike insect that threatens the health and sustainability of eastern hemlock (Tsuga canadensis) and Carolina hemlock (Tsuga caroliniana) in the Eastern United States (Dept. of Agriculture., 2005). The most severe cases have been found in the eastern states including: Pennsylvania, Virginia, New Jersey and Connecticut. It takes the HWA between four and ten years to completely eradicate the tree. The knowledge of being able to slow down the HWA would greatly increase your chances of saving your Hemlock on your property and around the USA.
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