9 Best Tomato Blight Spray Recipes That Actually Work (2026)

What Are The Best Tomato Blight Spray Recipes

The best homemade tomato blight sprays use copper, baking soda, or neem oil as the active ingredient. Copper sprays are the most effective against both early and late blight. Baking soda sprays prevent powdery mildew. Neem oil handles early-stage fungal outbreaks. This guide gives you exact ratios and mixing instructions for 9 tested recipes.