Pyracantha: Scab
Pyracantha: Scab categories: Ornamentals Pyracantha Pyracantha Diseases Shrubs revision date: 2022-12-05 12:00 Pyracantha scab on leavesPhoto by: R.S. Byther Biology Pyracantha scab is caused by a fungus that overwinters in infected leaves, twigs, and berries. Young leaves and berries are most susceptible to infection. Olive green to black spots develop on leaves, twigs and fruit. […]