Host Trees; Norway, Silver, Red, Mountain, Manitoba, Bigleaf and Sugar maples, Life Cycle;Emerged leaves are infected in spring during cool, wet weather. This fungus is found mostly on Norway Maple trees and causes large spots, up to nearly an inch in diameter. As...
Fall Webworm is just another insect to plague our trees this season. Unsightly tents are appearing everywhere. The favourite host trees of the Fall Webworm include Walnut, Cherry, Hickory, Crabapple and Birch trees. Larvae (caterpillars) pass through as many as 11...
History Boxwoods are planted as ornamentals and typically used for edging, as hedges, and/or clipped into different shapes to make topiaries (Figure 1). However when infested, the plants are disfigured by the loss of leaves, by webbing spun by the larvae, as well as...
