Actinovate Organic Fungicide contains a patented beneficial microorganism (Streptomyces lydicus strain WYEC 108) that attacks root rot and foliar fungal diseases on lawns, perennials, annuals, trees, shrubs, vegetables, herbs and much more. Effective against Brown Patch, Take-all Patch, Dollar Spot Downy Mildew, Powdery Mildew, Grey Mold Root Rot, Damping Off, Crown Rot, Black Spot, Leaf Spots, Rusts and more. For use with a hose-end sprayer, pump up sprayer or watering can. Two ounce concentrated powder treats up to 550 plants or 5,000 square feet of turf!