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

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Salvia > Leaves > Malformed or distorted leaves

1 of 2
  • Powdery mildew 1
  • Powdery mildew 2
  • Powdery mildew 3

Plant growth regulator herbicide injury

  • Leaves are twisted, cupped, or distorted
  • Leaves may appear thick and leathery
  • Veins in leaves are thick and close together
  • 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
2 of 2
  • Snapdragon rust 1
  • Snapdragon rust 2
  • Snapdragon rust 3

Downy Mildew
Pernospora lamii

  • Plants become yellow in color and stunted
  • Large brown angular blotches may appear on leaves
  • Leaves may curl slightly downward
  • Grayish brown to purplish fungal growth can be found on underside of leaves in humid conditions
  • Infected leaves prematurely drop from the plant leaving a barren stalk with few leaves
  • Cool, wet weather favors disease
  • More information on Downey mildew

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