Kaligreen Potassium Bicarbonate Fungicide is a contact-type fungicide for the control of powdery mildew. It contains microencapsulated potassium bicarbonate as the active ingredient and direct contact with the fungus is absolutely necessary for control. Potassium ion balance in the fungus cell is broken by Kaligreen; cell walls collapse, shrinking the cells and destroying the fungus.
5 lb bag
Mix Kaligreen with water, and spray on leaf surfaces, as per the instructions on the bag.