OCP eco-fungicide is used for the control of powdery mildew, black spot and rust in many plants including tomatoes, zucchini, roses, grapevines and geraniums. It rapidly attacks existing infections and creates a protective barrier against new outbreaks. Eco-fungicide is a contact spray so good coverage is essential to obtain the best results. Made from food-grade ingredients, it is safe to use on edible plants and has no withholding period.