Don't let rain and high humidity destroy your onion crop. When you realize that they aren't storing well, it is too late. This broad-spectrum fungicide is for control of downy mildew, tip blight, botrytis, stemphylium leaf blight, and white tip. Order five or more for just $15.95 EACH! Use 2-5 tsp per gallon of water. Will treat 7 bunches for an entire season. Spray every 10-14 days after planting.