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Strawberry

Diseases—Botrytis and Powdery Mildew

Watch for these diseases during routine field monitoring and harvest operations. Names link to more information on identification and management.

Click on photos to enlarge

Botrytis blossom blast
Botrytis blossom blast
Identification tip: Brown, withered blossoms; gray tufts of pathogen spores.

Botrytis early fruit lesion
Botrytis early fruit lesion
Identification tip: Light brown spots or patches on fruit, often near calyx.

Botrytis sporulation (gray mold)
Botrytis sporulation (gray mold)
Identification tip: Velvety gray pathogen spores on surface of rotting fruit.

Bird damage
Powdery mildew damage
Identification tip: Leaf edges curled upward; purple discoloration of leaf margins.

Powdery mildew sporulation
Powdery mildew sporulation
Identification tip: Powdery white patches on underside of leaves.

Powdery mildew on fruit
Powdery mildew on fruit
Identification tip: Raised, prominent seeds; powdery, white fungus tissue.

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