Non-Chemical Management
- Plant disease-free materials in well-drained soils.
- Rotate crops. Do not plant onions and related crops into the same locations each year. Allow at least three years before replanting susceptible crops in a location which was previously diseased.
- Space plantings to provide good air circulation.
- Avoid overhead watering.
- Remove and destroy diseased plants and debris. Destroy or discard (do not compost) diseased materials.
- Control weeds in and around the garden.
Select non-chemical management options as your first choice!
