Non-Chemical Management
- Pick and destroy infested leaves, when practical, to help improve appearance.
- Prune out dead twigs and branches.
- Black locust (Robinia pseudoacacia) is not attacked. The honey locust (Gleditsia triacanthos) variety 'Shademaster' is reported to be less susceptible, but 'Sunburst' is very susceptible.
Select non-chemical management options as your first choice!