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Hemlock Woolly Adelgid

HWAAn insect is threatening to destroy one of our most valuable native trees—the Eastern Hemlock.

Hemlock Woolly Adelgid (HWA) is a tiny, aphid-like insect introduced to the U.S. from Asia. Since 1988, when it was discovered in the state, it has slowly spread throughout the region, usually by wind and birds.  In addition to being small, HWA is different from other insects as it lays dormant much of the growing season and becomes active throughout the winter, producing new egg masses as early as February.

HWA can be easily recognized by the presence of white cottony egg masses on Hemlock twigs.  Damage is caused when the eggs hatch and the young feed by sucking sap from the twigs, killing them.

Trees infested with HWA, untreated, may decline and die very quickly. Once HWA has been identified, it should be treated immediately. 

Effective treatments are available to manage HWA.

Call 877-308-8733 now to have your Hemlocks inspected by a certified Arborist and protected against this deadly pest.

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