Ground Cover consists of 3.2-ounce polypropylene, which resists tearing, puncturing, and weed penetration. It is approved for most government weed control applications. It is ideal for greenhouses, outdoor displays, and as a weed barrier for plantings without topical coverings where a weed-free environment is a must. It is stripped every 12" to aid in plant alignment and is UV-stabilized to last even in direct sunlight.