HOST PLANTS: Black knot is host to many Prunus species, both edible and ornamental are susceptible. Included are most species of Cherry trees, Flowering Almond trees, Apricot trees, Chokecherry trees, Peach trees and Plum trees. DAMAGE: Black knot causes large black...
HOST PLANTS: Birch trees. DAMAGE: The birch leaf miner feeding between the upper and lower surfaces of the leaf cause papery brown blotches to appear on the leaves. Severely infested trees have the appearance of being scorched as the leaves turn brown where the larvae...
HOST PLANTS: Beech leaf disease is found in forests with American beech (Fagus grandifolia) and in plantings of European (sylvatica), Oriental (Fagus orientalis), and Chinese (Fagus engleriana) beech in North America. DAMAGE: First detected in Ontario in 2017, the...
