HOST PLANTS: Eastern White Cedar, arborvitae (Thuja spp.) DAMAGE: Larvae mine foliage from the tip to the base of the branchlet. Damaged foliage turns brown and is hollowed out as the larvae feeds from the inside. Tiny emergence holes can be found near the base of...
Host Plant: Boxwood Psyllid Damage: Cupping and curling of new terminal leaves. Young leaves curl, cup, and turn yellow creating a protective pocket for the nymphs. Nymphs create a white, cottony-like, waxy secretions on the leaves. This damage is noticeable in the...
HOST PLANTS: Found mostly on the Butternut (Juglans cinerea) but other members of the walnut family may also be affected. All naturally occurring Butternut trees of any age and size are protected in Ontario whether or not they are infected with Butternut Canker, but...
