Grass Mat blankets are strong enough to protect fragile seedlings from wind, temperature extremes and other harsh conditions during the critical germination stage. Lightweight design combines netting and air, allowing Mat Inc., Floodwood, Minn.and sunlight to infiltrate mat for optimum seedling growth. Ideal for the vegetation of soil on slopes or flat areas. Each mat is made from wood chips and corn stover (produced by mechanically cutting and grinding corn plant, including the stalk, leaves and an occasional cob). Conforms to ground contours, plus degrades naturally in soil. Comes in 5- by 150-ft. rolls that cover 750 sq. ft. To install, use staples to anchor mats in place. Select from green mats or other natural shades to complement landscapes.