Leaf and Shoot Blight (Venturia macularis, V. populina, V. tremulae)

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Ostry, M.E.; Wilson, L.F.; McNabb, H.S.; Moore, L.M. A Guide to Insect, Disease, and Animal Pests of Poplars. United States Department of Agriculture, Forest Service. Agriculture Handbook 677. January 1989. 118 p.

Importance -The disease is usually most severe in young aspen stands, but it can also affect hybrid poplars. Affected stems and leaves become blackened and distorted. Death of terminal and lateral shoots can distort small trees, causing a shrubby tree form and reducing growth. After repeated attacks, small trees may die because of suppression and infection by other disease organisms.

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