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Hemlock Woolly Adelgid Infestation in the Fall

Hemlock Woolly Adelgid Can Be a Serious Threat to Tree Health

hemlock-woolly-adelgidHemlock Woolly Adelgid (HWA) are tiny, aphid-like insects that feed on Eastern Hemlocks ravenously through the late fall and winter. They lay in a dormant stage most of the growing season, but usually return to their feeding habits by mid-October. For detailed information on the HWA, please view our insect & disease glossary.

Preventing Hemlock Woolly Adelgid (HWA)

In order to prevent Hemlock Woolly Adelgid, our Certified Arborists recommend topical applications or injection treatments of horticultural oil. Regular fertilization and pruning is also recommended in order to prevent these pests from infesting your Hemlocks. It is best to utilize spring, summer, and fall horticultural oil treatments in order to prevent Hemlock Woolly Adelgid.

HWA injection treatmentIf you happen to notice white cottony egg masses on your Hemlocks, then it is likely that you have an HWA infestation. Call a Certified Arborist immediately. HWA infestation can be devastating.

Be sure to keep an eye on your Hemlocks for any signs of infestation. Keeping your trees healthy with regular fertilization and pruning will help ward of HWA, but horticultural treatments are recommended as HWA has been so bad in recent years. To learn more about HWA, or to have an Insect & Disease specialist out for a free consultation call 877-308-8733 or click the button below.




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