Can I reuse soil from plants that had powdery mildew or blight?

Answer: Reusing soil from diseased plants can spread pathogens. Here are steps to safely reuse it:

1. Remove Top Layer: Take off the top 6-8 inches of soil and replace with fresh, sterilized soil.
2. Solarize: Cover soil with clear plastic for 4-6 weeks in summer to kill pathogens.
3. Add Organic Matter: Amend with compost or worm castings to restore nutrients.
4. Rotate Crops: Plant a different type of crop less susceptible to mildew or blight, like leafy greens or root veggies.
5. Add Beneficial Microorganisms: Use mycorrhizal fungi or beneficial nematodes to improve soil health.

These steps can help you reuse soil while minimizing disease risk.