How to Manage Pests

Pests in Gardens and Landscapes

Botrytis rot (gray mold)—Botrytis cinerea

Leaves on or near the soil or in the dampest areas of the garden turn light brown and develop a gray or brown fuzzy growth of fungal spores. Plants shrivel and rot and often develop flattened hard black masses, called sclerotia, under rotted parts.

Identification | Life cycle

Solutions

Plant on well-drained, raised beds, use furrow irrigation whenever possible, and try to keep the surface of vegetable beds as dry as possible. When sprinkling plants, do so in the morning so that foliage will dry quickly during the day. Harvest in advance of rainy or humid, cool conditions whenever possible. Remove diseased plants as soon as they appear and dispose of them. Discard plant residue left in the garden to prevent infection of the next planting.

 

 

Wilt caused by Botrytis rot
Wilt caused by Botrytis rot


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