How to Manage Pests

Pests in Gardens and Landscapes

Sunscald on beans

Sunscald symptoms first appear as small water-soaked spots on upper surfaces of leaves, stems, or pods that are exposed to the sun. These spots are generally close together, turn reddish brown, and form large spots on affected plant parts.


This condition is caused by exposure to intense sunlight and/or high temperatures. The problem tends to be most severe following periods of high humidity and overcast skies. No control is available.

Sunscald on bean leaf
Sunscald on bean leaf

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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