Effective on early and late blight, leaf spots, downy and powdery mildew, anthracnose, and black rot. Use as a preventative measure preceding a rain to prevent fungal spores from landing on leaves and establishing themselves. 1 Pt. Average use is 4-6 tsp./gal. of water. NOTE: Cannot ship to AK, HI, Washington DC, Canada, or outside the U.S.