Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Winterberry > Spots or blotches on leaves
Winterberry > Leaves > Spots or blotches on leaves
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Powdery mildew
Erisyphe polygoni
- White spots or blotches on leaves
- In severe cases leaves and young shoots may be completely covered with white powdery fungal growth
- Leaves may be stunted, curled or puckered
- Red or purple blotches may occur on upper leaf surfaces
- More information on powdery mildew
