How Much Grass Seed Will I Need?

Grass seed should be applied at the recommended rate.

Planting grass seed is an economical alternative to laying sod. Grass seed is available in many varieties, and even mixes, that combine characteristics of several grass types. Choosing a grass type appropriate for the area, improving the soil and applying seed at the correct rate will ensure a healthy lawn.

Types

Different grass seeds have differing seeding rates. In general, the larger the seed, the higher the seeding rate. Kentucky bluegrass is seeded at a rate of 1 to 2 lbs. per 1,000 square feet of soil. Perennial ryegrass and tall fescue is seeded at a rate of 5 to 9 lbs. per 1,000 square feet of soil. Fine fescue is seeded at a rate of 3 to 5 lbs. per 1,000 square feet.

Size

To determine the size of the lawn area, the width and length of the yard are measured. The numbers are then multiplied, which is the square footage. For example, if a yard measured 30 feet by 60 feet, the square feet would be 1,800.

Considerations

Planting seed at the correct rate, or slightly less is better than over-planting, advises Cornell University. Planting too much seed causes it to compete and become overcrowded. Seed should be applied using a drop spreader or spin seeder. For best coverage, half the seed is applied in one direction, while the remaining half is applied while walking at an angle opposite the previous direction.

References

• Cornell University Gardening Resources: Choosing Lawn Grasses
• Cornell University Gardening Resources: Lawn Renovation and Establishment