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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Pansy > Leaves discolored white, yellow or pale green

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Pansy > Leaves > Leaves discolored white, yellow or pale green

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  • Spider mite damage 1
  • Spider mites 2
  • Spider mites 3

Two-Spotted Spider Mites
Tetranychus urticae

  • Active during summer, particularly abundant during hot, dry weather
  • Pale stippling appears on the upper leaf surface
  • Leaves are discolored off green to whitish, yellowish, or bronze
  • Premature leaf drop can occur
  • Visible webbing occurs on infected leaves when populations are high
  • Adults are tiny (1/50th inch long) and oval, greenish or yellowish with a dark spot on either side of the body
  • More information on Spider Mites
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  • Powdery mildew 1
  • Powdery mildew 2

Powdery Mildew
Sphaerotheca macularis

  • Powdery, fluffy white spots and blotches on leaves, stems, and flower parts
  • Spots typically start on lower leaves but can spread to cover the entire plant
  • Severely infected leaves may be completely covered in white or grayish white fungi
  • In some cases, leaves become curled or twisted or turn yellow due to the infection
  • Pansy cultivars vary in susceptibility to powdery mildew
  • More information on Powdery Mildew
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  • Downy mildew 1
  • Downy mildew 2

Downy Mildew
Pernospora violae

  • Leaves turn pale green to yellow and may curl slightly downward
  • Downy white fungal growth on underside of leaves
  • Plants become yellow in color and stunted
  • Infected leaves prematurely drop from the plant leaving a barren stalk with few leaves
  • Disease favors cool, wet weather
  • More information on Downy Mildew

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