Yellow/Brown/Gray Leaves on Tomatoes, Cukes, Beans: Multiple Possible Causes

Leaves yellow with brown spots, some gray/ashy. Asks what to do.

Could Be Several Things

• Fungal diseases (early blight, septoria, powdery mildew)
• Nutrient deficiencies
• Over/under watering
• Aphids, spider mites

First Steps

1. Spray **Neem oil** or **baking soda** (1 Tbsp/gal) for fungal issues.
2. Water early morning only.
3. Don't overwater.
4. Inspect for insects (undersides).

Accurate ID needed for targeted treatment. Start with broad organic fungicide + cultural fixes.