Eliminate fungal growth on your plants with Eco-Fungicide. This organic fungicide controls powdery mildew, black spot and rust that attacks existing fungal infections on plants. It also kills external fungal growth within minutes, and leaves an invisible protective coating that prevents new spores from germinating. It is safe to use on fruits and vegetables and a variety of plants including tomatoes, zucchini, roses, grapevines and geraniums.