Organic Labs Plant Doctor is a broad spectrum systemic fungicide for turf, fruit trees, ornamentals and flowers. An earth-friendly product, Plant Doctor is an environmentally responsible alternative to traditional chemical fungicides. Plant Doctor prevents and controls a myriad of plant diseases, including those that cause root rot, leaf and stem blights, leaf spots and many others! A systemic product, it has a foliar or root application that will work its way throughout the entire plant to prevent disease and attack existing disease above and below ground. Once inside the plant, Plant Doctor increases plant metabolism so plants grow faster, bloom more and have an increased yield. Excel is nutritional too, giving a boost of potassium and phosphorous, essential nutrients for plant growth.