Hemlock Woolly Adelgid

Hemlock Woolly Adelgid is a small wingless insect which has piercing mouthparts to feed in the xylem of the small hemlock twigs.  This insect is originally from Asia and was first discovered in Portsmouth in 2000.  Today there are many communities with small infestations spread throughout the southeast region.

Please follow the following links to see a current map of HWA in NH, the quarantine on hemlock material, and other related information.

Hemlock Woolly Adelgid Action Plan

Hemlock Woolly Adelgid (HWA) Quarantine

USDA Forest Service HWA webpage