The rotted fruit eventually shrinks and turns black. Infected blossoms suddenly wilt, turn brown, and wither. Later they are covered with a tan-gray mold. Oval, brown, sunken cankers form on the fruit spurs, twigs, and small branches. Gum commonly oozes out from the canker margins during wet periods.
Sanitation is critical for disease control.
All dropped and rotted fruit should be promptly removed and destroyed. Remove all mummies from the tree. Prune out all cankers and blighted twigs after the last picking and during the dormant season. Prune trees annually to open the center and improve air flow. Remove and burn or bury all wild and neglected stone fruit trees.