Plant-RX works to control an extensive list of fungal diseases in turf, fruit trees, vegetables, ornamentals, and flowers. Plant-RX can be used as both a foliar or root application and will move throughout the plant's system to attack diseases it comes across and will prevent further disease development. Plant-RX works on helping control black spot, crown rot, damping-off, downy mildew, Fire Blight, Foliar Rot, Gummy Stem Blight, powdery mildew, Pythium spp, Phytophthora spp and more. OMRI listed