Plant Diseases

Anthracnose (on plants)

Anthracnose (on plants)
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The name "anthracnose" encompasses numerous diseases caused by fungi that flourish in wet weather; each fungus attacks only a narrow range of plants. Prevalent in the eastern and central United States, anthracnose diseases are characterized by cankers (sunken lesions) on leaves, fruit, and stems. Spore masses, which look like light pink slime, frequently ooze from the cankers. The spores are spread by wind and rain, as well as by gardeners handling wet plants.
Anthracnose is also carried in infected seeds.

Target: Beans, cucurbits, and other vegetables; dogwood, ash, elm, maple, oak, sycamore, and other trees.

Damage: Cankers form on plant parts. Infected leaves often drop prematurely; diseased stems and twigs die back.

Control: Fungicides

Notes: Use certified disease-free seeds grown in the United States. Avoid working among wet plants, Prune out infected branches.