Non-Chemical Management
- Plant disease-tolerant or resistant varieties. 'Krummel', 'Muir', and 'Redhaven' are reported to be tolerant. 'Rosy Dawn' is somewhat resistant. 'Frost' is disease-resistant and is recommended for planting in western Washington. However, it has no juvenile resistance and must be protected during the first 2 to 3 years.
- Remove infected leaves when they first appear prior to sporulation of the fungus. Destroy infected material.
Select non-chemical management options as your first choice!