Skip to Main navigation Skip to Left navigation Skip to Main content Skip to Footer

University of Minnesota Extension
www.extension.umn.edu
612-624-1222

Extension > Garden > Diagnose a problem > What's wrong with my plant? > Annuals and Perennials > Peony > Black or brown

Print Icon Email Icon Share Icon

Peony > Flowers > Black or brown

1 of 1
  • Image: gray mold 3
  • Image: gray mold 2
  • Image: gray mold 1

Gray Mold
Botrytis paeoniae

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

Don't see what you're looking for?

  • © Regents of the University of Minnesota. All rights reserved.
  • The University of Minnesota is an equal opportunity educator and employer. Privacy