Powdery mildew on spirea, Spiraea japonica | College of Agricultural Sciences

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Stunting of growth on spirea 'Gold mound' from powdery mildew

Photo: Rosetta

Stunting of growth on spirea 'Gold mound' from powdery mildew

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Powdery mildew sporulation on leaf underside

Photo: Rosetta

Powdery mildew sporulation on leaf underside

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Powdery mildew symptoms on 'Anthony Waterer'

Photo: Rosetta

Powdery mildew symptoms on 'Anthony Waterer'

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Purpling of leaf due to powdery mildew infection

Photo: Rosetta

Purpling of leaf due to powdery mildew infection

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Blossom infection on spirea, Spiraea japonica, 'Gold mound'

Photo: Rosetta

Blossom infection on 'Gold mound'