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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Winterberry > Spots or blotches on leaves

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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

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