Identification Symptoms

  • White, shiny raised blisters (pustules) on the lower surfaces of leaves, stems and flowers
  • Pustules coalesce to form irregular patches
  • The epidermis ruptures exposing white spore mass which gives the pustule a powdery appearance
  • Distortion of the floral parts including petals, pistils and anthers due to hypertrophy and Hyperplasia
  • Plants malformed beyond recognition