Plants rot at the ground line, or crown, of the plant. ControlQRemove diseased parts as soon as you notice them and pull out and burn badly infected plants. Cut plants back to the ground in the fall. Burn dead material. Wilt is caused by a fungus that lives in water-conducting tubes of stems.
Infected plants wither and die quickly.
QDig plants out immediately. Do not replant peonies in the same spot until at least 3 years after wilted plants have been removed. Leaf Blotch Leaf blotch, or measles, is a disease that usually occurs after plants bloom. Leaf blotch fungus overwinters in dead plants. Infected plants have small red or reddish-brown spots on stems, leaves, and flowers.