Controls and eradicates powdery mildew. Monterey Bi-Carb is a fungicide containing micro-encapsulated potassium bicarbonate as the active ingredient (baking soda). A contact fungicide, it disrupts the potassium ion balance in the fungus cell causing the cell walls to collapse. Use on roses, vegetables, grapes, fruit trees and ornamentals. OMRI Listed for use in organic production.
* 4 oz.