Ryegrass is a great nitrogen scavenger and can assimilate as much as 200 lb./acre/year of nitrogen. Most of that nitrogen then becomes available to subsequent crops, thus saving on fertilizer input. Annual ryegrass is a very competitive winter annual, with good seedling vigor, fast germination (with adequate moisture) and rapid establishment. Annual ryegrass is a bunch grass, yellowish-green at the base, with long glossy green leaves up to 12" each. it will overwinter in certain years. When used as a cover crop, annual ryegrass is killed in the spring before it reaches seed formation stage. Sow from early spring through late summer. As winter cover, ryegrass will winter kill, but still help protect the soil. Sow, then rake to lightly cover. Seeding rate: short-term lawn (thick) 4 lb./1,000 sq.ft. (160-170 lb./acre); cover crop (thinner) 1 lb./1,000 sq.ft. (40 lb./acre). Avg. 153,700 seeds/lb.