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Portland Trees

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Hawthorne Leaf Blight

Description

Susceptible species

Treatment

Additional information


Description

Hawthorne leaf blight, also called leaf spot, is caused by a fungus and exacerbated by cool, wet weather. Infection manifests as small reddish-brown spots; then the area between spots will yellow and leaves will eventually fall off. If canopy loss occurs several years in a row it can severely weaken the tree.

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Susceptible species

English hawthorne and Paul’s scarlet hawthorne

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Treatment

Prompt removal of leaves with symptoms, raking and destroying fall foliage, and foliar fungicide treatment in the spring.

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Additional information