If you’re looking to fill bare spots and thin areas of your lawn, Pennington Bare Spot Repair, 1 lb., is your answer. This grass seed mix establishes quickly and is guaranteed to make your lawn whole again. Plant this grass seed mix in the early spring or early fall and see results within 5 to 14 days. This grass performs best in Full Sun to Partial Shade. This 1-pound bag covers up to 100 square feet. While most grass seed companies buy their seed on the open market, we are the only major grass seed company that works directly with a network of dedicated growers.