Redbud Diseases: Botryosphaeria Dieback and Canker

Redbud (Cercis canadensis) is a beloved spring-flowering tree, but it can be severely affected by Botryosphaeria dieback and canker, especially when stressed by drought or winter injury.

Symptoms

Leaves wilt and die as branches are slowly killed. Small, sunken cankers enlarge over time. Wood beneath the canker is discolored. Trees cankered near the base will die.

Pathogen

Botryosphaeria spp.

Management

• Prune infected branches well below the canker.
• Remove severely infected trees.
• Protect trees from drought stress and winter injury through proper watering and mulching.