Grass Seed Coverage Per Pound | Square Footage by Type

One pound of grass seed covers roughly 100 to 1,000 square feet, depending on the grass species and whether you’re starting a new lawn or overseeding.

That wide range isn’t a marketing loophole — it reflects how differently grass species pack into a pound. Fine, tiny seeds like Bermuda spread much further per pound than bulky seeds like tall fescue. The number on the bag label’s seeding rate is the real authority, and the math to convert it is simpler than most people expect. Here’s how to figure out exactly how far your bag will go.

Why Coverage Varies So Much by Grass Type

Coverage per pound is a direct result of the recommended seeding rate, which seed companies print on every bag as “pounds per 1,000 square feet.” Divide 1,000 by that rate, and you get the square footage one pound covers.

The practical spread across common lawn grasses is enormous. Perennial ryegrass and tall fescue are heavy, coarse seeds that need 10 pounds per 1,000 square feet for a new lawn — so a single pound covers just 100 square feet. At the other end, Bermuda and Zoysia have tiny seeds that spread much further, covering about 500 square feet per pound at their 2-pound new-lawn rate.

New-lawn rates are always higher than overseeding rates because bare soil needs denser coverage to establish. When you’re repairing a patchy existing lawn, you can cut the rate roughly in half, which means each pound covers about twice the area.

Coverage Per Pound: Quick-Reference Table

These figures use the standard rates published in EarthEasy’s grass seed calculator and seeding-rate charts.

How To Calculate Coverage For Any Bag

Skip the guesswork with a three-step calculation using the rate printed on your specific bag:

• Find the rate: Look for “pounds per 1,000 sq ft” on the seed label. Bag rates override generic charts whenever they differ.
• Divide: Take 1,000 and divide it by that rate. For example, a bag calling for 5 pounds per 1,000 square feet covers 200 square feet per pound (1,000 ÷ 5).
• Multiply: Multiply your per-pound coverage by the bag’s total weight to estimate the full coverage area.

If you’re planning a larger project and want to estimate total bags needed, our roundup of the best 50 lb grass seed options lists top-rated bags across species — useful when a 50-pound purchase makes sense for a big yard.

For reference, industry guidance from Alseed notes that overseeding generally runs 2–5 pounds per 1,000 square feet, while new-lawn establishment runs 4–8 pounds. That’s a useful sanity check if a rate on a label looks unusually high or low.

Choosing The Right Rate For Your Lawn

Your situation dictates which rate applies. A brand-new lawn from bare soil needs the higher new-lawn rate; a thin but established lawn needs the lower overseeding rate. Using a new-lawn rate on an existing lawn wastes seed and creates dense clumps, while overseeding bare soil leaves a sparse result.

Seed blends and mixes complicate things further. A “sun and shade” mix, for example, typically carries its own blended rate — around 6 pounds per 1,000 square feet for new lawns and 3 for overseeding. Always defer to the bag’s label over any generic chart when they disagree.

Regional climate plays a role too. Cool-season grasses like fescue and bluegrass dominate northern lawns, while warm-season Bermuda and Zoysia thrive in the South. The rate chart on your bag reflects the species in the mix, so matching the grass type to your region matters as much as the math.