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

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

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Powdery mildew
Erisyphe polygoni

  • White spots or blotches on leaves
  • In severe cases leaves and young shoots may be completely covered with white powdery fungal growth
  • Leaves may be stunted, curled or puckered
  • More information on powdery mildew...
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Non-selective herbicide injury
(Round-up, Kleen-up, and other glyphosate products)

  • Yellowing, wilting, browning leaves and eventual death of foliage and plants
  • Damage usually appears first in new tissues
  • Shrubs sprayed during the summer or fall may not have noticeable injury until the following season when leaves appear as stunted, narrow, strap-like, and chlorotic

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