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Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Peony > Plant wilts

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Peony > Whole Plant > Plant wilts

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Gray Mold
Botrytis paeoniae

  • New shoots turn black, wilt and die when they emerge in the spring
  • Leaves and petals have black to brown irregular spots, and may turn completely black
  • Stem infections turn brown or black and often have a target spot appearance
  • Flower buds turn black to brown and fail to open
  • All infected plant parts produce fluffy gray spores with moisture
  • Most common in cool, wet weather
  • More information on Gray Mold ...
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Phytophora Leaf Blight
Phytophora cactorum

  • Black leathery spots on leaves or buds
  • New shoots or stems have long sunken black lesions and may fall over
  • In severe cases the crown and roots of the plant are soft, wet and mulchy; the entire plant wilts and dies
  • Common in heavy, poorly drained soil
  • Most severe in wet weather
  • More information on Phytophora Leaf Blight ...
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Verticillium Wilt
Verticillium albo-atrum

  • Leaves and shoots wilt
  • No signs of discoloration or rot on the outside of stems
  • Brown to tan discoloration of water conducting tissue in cut end of stem
  • Symptoms commonly seen during bloom period
  • More information on Verticillium Wilt ...

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