Ferti-lome F-Stop Lawn and Garden Fungicide Concentrate is designed to protect lawns, flowers, fruits, nuts, berries, and shrubs against major plant diseases. This concentrated liquid formula contains the active ingredient Myclobutanil which is effective in preventing and controlling diseases such as rust, black spot, powdery mildew, brown rot, brown patch, leaf spot, dollar spot, summer patch, and a lot more. It rainproofs in as little as 2 hours to ensure its effectiveness will remain intact.