The DeWitt Weed Barrier 3 Ft. W. x 50 Ft. L. Pointbond Polyproylene 5-Year Basic Weed Control Landscape Fabric is ideal for seasonal use in flower beds, gardens and light traffic landscape areas. Allows water and air to pass through while blocking sunlight to control weed germination and growth. Cover with 2 In. to 3 In. of bark mulch. 5-year product is 1.0 Oz. per square yard, Point bond polypropylene.