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The hemlock woolly adelgid is a tiny, aphid-like insect that is ravaging hemlocks from Maine to Georgia. The woolly adelgid is considered a serious threat to species of eastern hemlocks and to the overall health of forest and river ecosystems. Read on to learn more about the woolly adelgid, and find out how to tell if the hemlocks in your yard are infested.
Gardening columnist Don Kinzler says homeowners have three options: do nothing; proactively remove trees; or treat them with insecticide.
Plants under stress, and damaged or torn bark, give off ethanol or pheromones, which attract bark borer beetles.
Hemlock trees showing woolly adelgid damage. The hemlock woolly adelgid is a tiny, aphid-like insect that is ravaging hemlocks from Maine to Georgia. It attacks large native hemlock forests as well as hemlock landscape trees in your yard. The woolly adelgid is considered a serious threat to species of eastern hemlocks as well as the overall health of forest and river ecosystems. Hemlocks are one of the most popular trees planted in parks and backyards, so this problem can hit close to home. If the hemlocks in your yard are infested with the woolly adelgid, here’s what you need to do.