Used by thousands of organic farmers and home gardeners to win the battle against fungal and bacterial diseases. Use for prevention and control of plant diseases including powdery mildew, scab, leaf blight, late blight, black mold and many more. Serenade can be used on all your fruits, vegetables and ornamentals. It’s so safe you can use it right up to the day of harvest, and it will not harm bees, birds, beneficial insects or other wildlife. OMRI Listed. Choose ready-to-use or concentrate. (concentrate makes 8 quarts)