Seranade Garden fungicide provides protection against a broad spectrum of the most common fungal and bacterial garden diseases. It is non-toxic to bees and beneficial insects. It is made from a bacteria, Bacillus subtillis, so it is safe enough to harvest same day as treatment. It is great at preventing early and late blight on tomatoes and powdery mildew. Serenade Garden is a great choice for controlling fungal disease in your organic garden.