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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Osteospermum > Malformed, cupped or distorted leaves

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Osteospermum > Leaves > Malformed, cupped or distorted leaves

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  • Oedema 1
  • Oedema 2


  • Pale-green to white blisters or bumps on the undersides of leaves
  • Blisters may brown with age and have a crusty or corky appearance
  • Older leaves are more affected then younger ones
  • Occurs when plants are overwatered during cool or humid weather
  • More information on oedema
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  • Image: 1
  • Image: 2
  • Image: 3

Plant growth regulator herbicide injury
(2, 4-D, Dicamba, etc.)

  • Leaves are twisted, cupped, or distorted
  • Leaves may appear thick and leathery
  • Veins in leaves are thick and close together
  • Above ground root formation
  • Side of the plant closest to the herbicide application is most severely affected
  • Different species of plants in spray area will show similar symptoms
  • More information on plant growth regulator herbicide injury

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