The organic gardener's best friend! Prevents both foliar and root diseases. This highly effective product attacks foliar diseases such as powdery mildew downy mildew, grey mold, fire blight, leaf spots, rusts, black spot and more. It also prevents root diseases such as pythium, verticillium and fusarium. The active ingredient is a patented bacterium that grows around the root system or foliage. It also breaks down minerals and micronutrients making them more readily usable to plants. Use as a foliar spray or drench. Treats up to 550 plants or 5000 square feet of turf. OMRI Approved.