FOSPHITE FUNGICIDE 2.5GAL - For control of Phytophthora, Pythium, and Downy Mildew on food crops, turf, and ornamentals. Fosphite is an effective systemic fungicide. Approved by the EPA as a 'Reduced Risk Pesticide' for control of Phytophthora, Pythium, and Downy Mildew on food crops, ornamentals and bedding plants, Phytophthora in conifers and Pythium in turf.