Stop weeds before they start for up to 3 months, guaranteed Preen Garden Weed Preventer 5.625 lb. bottle prevents new weeds from sprouting, eliminating hand-weeding Safe for use around over 200 established flowers, vegetables, trees and shrubs Flip-top applicator cap makes it easy to apply Apply anytime in spring, summer or fall Not for use on lawns Weed preventer does not kill existing weeds Safe for use on edibles (see use directions for complete list) Remove existing weeds, sprinkle product evenly over garden area and water product into soil