Non-Chemical Management
- Mazzard rootstock F12-1 and cultivars 'Corum', 'Sam', and 'Sue' are disease-resistant.
- Provide proper culture.
- Avoid overhead watering.
- Avoid injury. Do not plant where frost damage is likely.
- Prune out and destroy infected tissues during dry weather. Make cuts well below visible canker and sterilize tools frequently. Do not remove cankers at the same time as regular pruning.
- Burn or cut out cankers on branches or trunks. Cauterizing should be done in the spring prior to bloom. Check cauterized areas for continued bacterial activity 15-20 days later.
- Remove severely infected trees.
- Control weeds, which may serve as a source of bacteria.
Select non-chemical management options as your first choice!