How Much Does Lawn Seeding Cost?

Seeding is the cheapest way to establish or thicken a lawn, by a wide margin. What it costs you instead is a season of waiting and a period of consistent watering.

Seed cost by grass type (opens in a new tab)

Seed price varies widely with cultivar quality. Cheap seed is cheap partly because it contains more inert matter and lower-performing cultivars.

Note that Kentucky bluegrass has the highest price per pound and one of the lowest costs per 1,000 sq ft, because the seed is tiny and the rate is low.

DIY cost, 5,000 sq ft (opens in a new tab)

Overseeding:

New lawn from bare soil:

Topsoil is the swing factor. Seeding into existing decent soil is cheap; building a root zone from scratch is not.

Professional pricing (opens in a new tab)

Aeration and overseeding are usually sold together because the combination is what works. Buying overseeding alone on an established lawn wastes a substantial share of the seed, which never reaches soil.

Slit seeding uses a machine that cuts grooves and drops seed directly into them. It gives excellent seed-to-soil contact and often better results than broadcast overseeding after aeration, at a similar price.

Seeding versus sod (opens in a new tab)

The cost difference is roughly five to ten times on material. The most common sensible compromise is sod for the front lawn and seed for the back.

Hydroseeding (opens in a new tab)

Between the two on cost and reliability. A slurry of seed, mulch, tackifier, and fertilizer is sprayed onto prepared soil.

Worth paying for when:

• The site is sloped, where dry seed washes into a line at the bottom
• The area is large, where spreading straw by hand is a genuine undertaking
• The site is exposed to wind

Not worth paying for on a small flat lawn, where careful dry seeding with a light straw mulch achieves the same establishment for less.

Timing changes what you get (opens in a new tab)

Seeding at the wrong time of year wastes the money regardless of how much you spend.

Autumn seeding of cool-season grass gives seedlings two mild seasons before their first summer, and it avoids the conflict with spring crabgrass pre-emergent.

Where to save (opens in a new tab)

Do it yourself. Seeding is the highest-value DIY lawn job there is. The materials are the bulk of the cost and the work is straightforward.

Hire the aerator, spread the seed yourself. Half-day aerator hire is $60–100 against $95–180 for the service.

Buy quality seed. Counterintuitive, but cheap seed carries more inert matter and lower-performing cultivars, so cost per pound of viable seed is often no better and the resulting lawn is worse. Compare pure seed percentage times germination percentage.

Seed only the thin areas. Broadcasting across a whole lawn to fix three thin patches wastes most of the seed. Aerate everywhere, seed where it is needed.

Test old seed before buying more. Twenty seeds on a damp paper towel for a week tells you whether last year's bag is still viable and worth using at a raised rate.