Defguard is a certified organic biofungicide and bactericide that is effective against a variety of pathogens, including botrytis and powdery mildew. It is OMRI-listed and can be used in organic gardening.
Biofungicides are formulations of living organisms that are used to control the activity of plant pathogenic fungi and bacteria. They are based on natural processes where beneficial microorganisms, usually isolated from soil, hinder the activity of plant pathogens.
To use Defguard, mix 1 teaspoon of the product per gallon of water and apply directly to plants using a hand pump sprayer or other suitable spray equipment. You can use it to control powdery mildews, leaf spots, anthracnose, and gray mold affecting leaves, flowers, fruit, and other above-ground plant parts of home garden plants.