This liquid concentrate is our go-to fungicide for tomato blight (early and late), powdery mildew, rust, grey mold, and other funguses that attack our plants through the growing season. A better option for those who care about keeping harmful chemicals out of the garden. This mix makes a ton of spray and is certainly something we have on hand at all times because of its effectiveness. Simply mix with water and spray plants with the solution until dripping.