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Disease
Leaf Spot

Leaf Spot

Leaf Spot is a common descriptive term applied to a number of diseases affecting the foliage of ornamental and shade trees. The majority of the leaf spots are caused by a variety of fungal pathogens but some are caused by bacteria. Anthracnose is a term for a group of loosely related fungal diseases that often cause irregular blotches on leaves. For more specific information about anthracnose see the separate disease profile on anthracnose.

The organisms that cause leaf spots survive in fallen infected leaves and twigs. Some may remain in dead twigs on the tree.

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