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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous Trees > Potentilla > Leaves discolored white, yellow or pale green

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

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Powdery mildew
Phyllactina guttata

  • White, powdery spots or blotches on leaves
  • Leaves and stems may be completely covered with white, powdery fungal growth
  • Leaves may yellow and drop prematurely
  • Young leaves and shoots may be curled and twisted
  • Entire shrub may appear gray or discolored
  • More information on powdery mildew...
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Two-spotted spider mite
Tetranychu surticae

  • White to yellow stippling on foliage; leaves can appear off-green
  • Heavy infestations will cause leaves to turn white, yellow and ultimately grayish bronze
  • Premature leaf drop may occur
  • Webbing may be present, especially when heavily infested
  • Mites usually appear in late June to August; they are more prevalent in hot, dry weather
  • Adult spider mites are small(approximately 1/50 inch long) and are hard to see; they are yellow to dark red with dark spots (need magnification to see)
  • More information on two-spotted spider mites...

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