How to Manage Pests

Pests in Gardens and Landscapes

Seasonal development and life cycle—Dothiorella canker

The fungus that caused Dothiorella canker can infect only through wounds. Heavy rainfall causes increased spore production and infection. Spores are produced in or on cankers, dead twigs, and dying fruit and leaves, and they spread in air and water. Infection on stems and leaves commonly develops during hot weather and where irrigation is not adequately managed. Trees that are stressed are more susceptible to infection.

Browning of leaf margins
Browning of leaf margins

Statewide IPM Program, Agriculture and Natural Resources, University of California
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Agriculture and Natural Resources, University of California

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