![Hemlock Woolly Adelgid Closeup J. Holmes Hemlock Woolly Adelgid Closeup - J. Holmes](https://beautifultrees.com/wp-content/uploads/2024/06/Hemlock-Woolly-Adelgid-Closeup-J.-Holmes-300x225.webp)
Hemlock Woolly Adelgid
Hemlock Woolly Adelgid (Adelges tsugae) is an aphid-like insect that attacks and kills hemlock trees. Its egg sacs, which look like cotton balls or clumps of snow, can be found at the base of needles. It can be spread by wind, animals and human movement of nursery stock, logs, firewood and other wood products.