The woolly elm aphid is a native pest that causes new leaves to roll along one edge with the tissue becoming swollen to form a gall-like structure within which the aphids feed. Although the damage may appear unsightly, records indicate it is seldom causes enough damage to affect the overall health of the host tree. The aphid alternates between the spring leaf-feeding generation on elm and a summer root-feeding generation on Amelanchier spp.
Want to know more about Ron Wilson? Get his official bio, social pages and more!Full Bio