What is the best time of year to look for HWA infestations?
Hemlock woolly adelgid begins to feed on the hemlock and reproduce exponentially throughout the warm seasons. As summer passes and the temperature drops the adelgid prepares itself for the next winter season by producing small little cocoons that resemble small cotton balls about the size of a bb that protect it from the cold. Hemlock woolly adelgid is not visible to the human eye, but these white woolly masses are visible year round.
