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

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Spirea > Leaves > Spots or blotches on leaves

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Powdery mildew
Podosphaera oxycanthe

  • White spots or blotches on leaves
  • In severe cases leaves may be completely coated with white powdery fungal growth
  • Leaves may be stunted, reddened, scorched and curled or puckered by midseason
  • More information on powdery mildew

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