Greenhouse Fungus on Cucumbers, Peppers, Tomatoes: Sterilizing Soil

Likely Diseases

Fuzzy growth on fruit/flowers → downy mildew, powdery mildew, galls, or mold — all fungal.

Soil Sterilization Method

1. Apply copper or lime‑based fungicide to soil surface.
2. Cover with black plastic.
3. Leave 4+ months — solar heat kills pathogens, nematodes, weed seeds.

Alternative

Rotate crops to new greenhouse beds if possible.