Non-Chemical Management
- Prune and space plantings to allow good air circulation. Do not plant in extremely shaded or damp areas.
- Hand-pick and destroy mildewed leaves to control small amounts of infection.
- Rake and destroy fallen leaves year-round to reduce infection source. Do not compost diseased materials.
- Do not overwater or overfertilize plants, as the fungus prefers succulent new growth.
- Hose diseased plants with water when practical. This can help remove fungus and prevent new infections.
Select non-chemical management options as your first choice!