Diplodia Canker

Diplodia canker produces sunken cankers on tree bark of stressed hosts. You see dark lesions with oozing or staining beneath bark. The disease favors drought stress and enters through wounds. Remove infected branches and maintain proper tree hydration.

Grow resistant cultivars. Remove and destroy dead wood, wood prunings, and mummified fruit. Prune affected branches well below visible symptoms and sterilize tools between cuts. Avoid pruning during wet weather, which spreads the pathogen through fresh wounds. Maintain plant vigor through proper watering and site management.