1 application blocks weeds up to 6 months guaranteed. When used as directed Preen Extended Control Weed Preventer can be used around more than 600 perennials, groundcovers, shrubs. Flip-top applicator cap makes it easy to apply. Not intended for use on flower seeds, lawns, vegetable gardens, water gardens or other food-producing or edible plants. Covers 3,500 sq. ft..
