How to Manage Pests

Pests in Gardens and Landscapes

Sunscald on tomatoes

Sunscald causes fruit to become brown and leathery on the side exposed to the sun.


Sunscald may be confused with the diseases black mold or late blight. Black mold, like sunscald, may cause large lesions on fruit, but these are usually covered with a black velvety layer of spores. Fruit affected by late blight remain firm with brown blotches but those are usually around the calyx and top part of fruit whereas sunscald symptoms are typically on the side.


Maintain plant vigor with necessary fertilizer and water to produce adequate leaf cover.

Fruit exposed to the hot sun
Fruit exposed to the hot sun

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