Lawn area
Seeding type
Starting from bare soil uses a higher seeding rate for full coverage.
Grass type
Most common grass for cool-season lawns. Check your climate zone to confirm the right type.
Frequently Asked Questions About Grass Seed
Q1. How much grass seed do I need?
To find how much grass seed you need, measure your lawn’s square footage, then multiply by the seeding rate on the product label, which differs for new lawns versus overseeding. As a rough guide, many cool-season grasses are seeded at about 4 to 8 pounds per 1,000 square feet for a new lawn and roughly half that for overseeding. For example, 5,000 square feet at 5 pounds per 1,000 needs about 25 pounds. Our Grass Seed Calculator applies the right rate for your situation.
Q2. What’s the seeding rate for new lawns versus overseeding?
New lawns need about twice the seed of overseeding because you’re starting from bare soil. Typical new-lawn rates run roughly 4 to 8 pounds per 1,000 square feet for cool-season grasses and less for fine-seeded warm-season types, while overseeding an existing lawn uses about half that. Always follow the specific rate on your seed bag, since it varies by species and blend. Applying too much seed causes overcrowding and weak seedlings, while too little leaves thin, patchy turf.
Q3. What type of grass seed should I choose?
Pick grass seed suited to your climate, sun, and use. Cool-season grasses—Kentucky bluegrass, perennial ryegrass, and tall or fine fescue—thrive in northern regions; tall fescue tolerates heat and drought well, while bluegrass forms a dense, attractive lawn. Warm-season grasses—Bermuda, zoysia, centipede, and bahia—suit southern climates and heat. Consider shade tolerance, foot traffic, and watering needs. Many products are blends designed for sun, shade, or high-traffic use, so match the blend to your yard’s conditions.
Q4. When is the best time to plant grass seed?
The best time to plant grass seed depends on the grass type. Cool-season grasses (fescue, ryegrass, Kentucky bluegrass) do best sown in early fall, with spring as a second choice. Warm-season grasses (Bermuda, zoysia) are best sown in late spring to early summer once soil has warmed. Seeding in the right window gives roots time to establish before stress from heat or cold. Avoid sowing right before extreme weather, and keep the seedbed consistently moist until germination.
Q5. How do I prepare soil for grass seed?
Prepare the seedbed by clearing weeds and debris, loosening the top 1 to 2 inches of soil with a rake or tiller, and leveling it. A soil test helps you correct pH and add needed nutrients; working in compost improves poor soil. Lightly firm the surface so seed sits in good contact with soil, then sow evenly, rake lightly to cover seed about 1/4 inch, and water gently. Consistent moisture during germination is essential for even, thick coverage.