How Much Grass Seed Do I Need To Overseed? - Machines Rating (2022)

Lawns look best when lush green with no dry or thin patches. But summers and winters can be tough on your grass turfs such as bermuda grass and st. Augustine grass, leaving them distraught and worn out. Furthermore, excessive traffic on the grass during summers when kids and pets enjoy playing can also severely damage the grass.

Even though you take extreme and timely care of your lawn, water the grass, feed it with fertilizer, and make sure that there is limited traffic on the grass, you will notice that the grass turf will no longer appear after four to six weeks greener and lush as before. This is because mature grass does not grow many tillers making the lawn look patchy and distressed. You need to have young grass on your lawn to make it look fuller, greener, and lush.

How Much Grass Seed Do I Need To Overseed? - Machines Rating (1)

There is a simple solution to all these problems, overseeding! Yes, overseeding is a simple yet effective solution to all such grass problems. If your lawn is suffering from patchy spots, bare spots, thinning grass, or simply if you want to make your yard appear greener, then overseeding is the most effective and easy way to cater to these issues.

What exactly is overseeding?

Overseeding is a technique usually adopted by landscape professionals but can also be done by homeowners to improve and rejuvenate the lawn. Instead of planting the turf from scratch, overseeding helps you add grass to the existing lawn without making much effort. Overseeding will help your lawn grow stronger, healthier, thicker, and greener.

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What is the Best Time to Overseed your Lawn?

Your region’s climate determines the best time for you to overseed your lawn. Early fall and late summer times when the temperature drops down are the best times to overseed your lawn. Summers and winters are harsh and unsuitable for seed germination and the new tender grasslings.

The weather for overseeding should be cool enough to support the growth of the new grass leaves and warm enough for germination. If the soil temperature has lowered to support germination, but the outside temperature is still hot, overseeding will not be as effective as it should be because the tender grass leaves may not bear the hot temperature.

How Much Grass Seed Do I Need To Overseed? - Machines Rating (2)

So fall and spring seasons are the best time to overseed your lawn and prepare it for the upcoming harsh weather. If you do not have sufficient knowledge regarding the weather conditions and grass seeds suitable for a climate, consult a professional landscape designer or gardener to know the perfect time for overseeding.

What are the Best Grass Seeds for Overseeding?

Grass turfs in other lawns may seem the same but grass can be of great variety. There are quite some choices for you to choose from cool-season grass seeds and warm-season grass seeds. The choice depends on your preference and your region’s climate.

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Overseeding the right grass seed at the right time is essential to reap the benefits of overseeding because a warm-season grass seed cannot grow and survive during the cool season and vice versa. Furthermore, some grass seeds need extra care and maintenance, while some are effortless. So if you are not a gardening person or busy, make sure to opt for an effortless one so that you can enjoy a thick, green lawn without making much effort.

Let’s have a look at some of the grass seeds that can be used:

1. Tall Fescue Seed:

It is one of the most commonly used grass seeds by the majority because it is low maintenance and does not need to be watered every other day. It is a cool-season grass but offers better tolerance to heat and traffic than other grasses of this season. It also has a better tolerance level for the cold season as compared to warm-season grasses; that is why it can almost survive all year long.

How Much Grass Seed Do I Need To Overseed? - Machines Rating (3)

It can withstand drought conditions and can easily survive in shaded lawns; that is why it is an excellent choice for those who are into low-maintenance lawns. Tall fescue can appear dark green in the early winter and fall season, while the color during the mid-spring season is lighter green.

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Tall fescue grass grows as clumps and upright, making the lawn appear lusher, thicker, and greener. So if you are looking to make your lawn look dense and healthier, tall fescue is the best option you can go for. It offers the best results with the least maintenance.

2. Perennial Ryegrass Seed:

It is another cool-season grass that is a preferred choice by many because it is not prone to damage easily, offers extra shine making the lawn look beautiful, and can grow fast. It is great for colder seasons when the warm season grass cannot survive. It is a perfect grass seed for overseeding as it has a high germination rate, and the new grass can sprout as early as three to five days of seeding.

How Much Grass Seed Do I Need To Overseed? - Machines Rating (4)

Although it grows fast, it does not spread as quickly, making it less dense. Because of the lower density, ryegrass seed is generally not used as a standalone grass but with some other grass to enhance the lawn’s appearance. Moreover, it is a high-maintenance grass see and requires extra care.

3. Kentucky bluegrass Seed:

If you are looking for overseeding a grass seed that can cover up your dried grass patch or thin area of your lawn in a jiffy, then Kentucky bluegrass seed should be a perfect choice. It is a dark green coloured grass that spreads on your lawn real quick, making it appear denser and greener. The roots of these grass seeds are firm and spread rapidly, creating a carpet-like turf, which makes it a great choice for sports grounds and high-traffic areas like parks or playgrounds.

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How Much Grass Seed Do I Need To Overseed? - Machines Rating (5)

It is the best choice to make if you wish to enjoy a lush green lawn during the winter season as it has excellent tolerance to extreme cold temperatures compared to other cool-season grasses. It has the property of self-healing, which makes it strong and resistant to diseases and fungal attacks.

However, it is not a low-maintenance grass and requires regular attention and care to grow and survive.

4. Red Fescue Seed:

If you live in a transition region where temperatures can fluctuate a lot, red fescue grass is the best grass seed for overseeding your lawn. It can grow and spread perfectly in shaded areas with less sun exposure. It can also grow and survive in humid regions. It has a fast germination rate and makes your lawn look perfect and rejuvenated within no time. However, it cannot survive in the scorching sun.

5. Annual Ryegrass Seed:

The best grass seed to overseed for a perfect lawn all year round is the annual ryegrass seed. It can grow and survive well in all temperatures, although it is great for the cooler season. It is a great grass seed to overseed with a combination of other warm-season grass. However, it is easily susceptible to diseases; therefore, it requires regular care.

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Overseeding Fescue Rate

Overseeding is different from seeding a new lawn from scratch. Planting the right amount of seeds for overseeding is very important for sprouting and growing efficiently. The right amount of seeds will ensure that each seed comes in contact with the soil, has exposure to the sun, and can get all vital nutrients and minerals from the soil without fighting for survival.

Seeding rates are defined as the number of seeds in pounds needed for 1000 square feet of area. For determining the overseeding rate, you need to divide the normal seeding rate in half. For instance, the standard seeding rate for tall fescue grass seed is around eight pounds per 1000 square feet. So if you are looking forward to overseeding fescue, you need to sow only four pounds of the seed for every 1000 square feet.

Conclusion

Overseeding is a great way to deal with different lawn issues and make it look better and refreshed. Overseeding requires expertise and knowledge to get it done right. Make sure you choose the best grass seed for your lawn and the right amount for your area to transform your dull and patchy lawn into a lush and green garden.

FAQs

How much lawn seed do I need? ›

What is the sowing rate for grass seed? To make a lawn from seed, you need to sow 25-30g of grass seed per square metre. If you are over-seeding to renovate an existing lawn or sports field, 15-25g/m2 is plenty. If you know the area of the lawn-to-be, you will be able to calculate your seed requirements.

What is the spread rate for grass seed? ›

If you are sowing a new lawn from scratch, spread your grass seed at a rate of 35g per square meter. For overseeding an existing lawn, spread your seed at 25g per square meter.

How do I calculate grass seed for overseeding? ›

Divide the total square feet of your lawn by 1,000. Then multiply that number by the pounds of seed needed per 1,000 square feet. For example, if you were overseeding with Kentucky Bluegrass and your yard size was one acre, you would do the calculation as follows: 43,560 / 1,000 = 43.56; 43.56 x 2 = 87.12.

How much will a 50 lb bag of grass seed cover? ›

The 50lb option covers 10,000 square feet for overseeding and 5,000 square feet for bare ground.

How often should I overseed my lawn? ›

Reseeding the lawn compensates for the slowed growth and rejuvenates the look of your lawn. If you reseed every three to four years you re-establish the lawn before it begins to thin out. This ensures the lawn stays thick and dense, which prevents weeds from invading.

What is the best fertilizer for overseeding? ›

Use a slow-release nitrogen fertilizer, such as Milorganite, when overseeding. Mixing Milorganite with the seed not only makes nutrients available to the grass when it needs it, it also makes it easier to see where the tiny seeds have been broadcast. This counts as the fall fertilization.

What grass seed grows the fastest? ›

What type of seeds grow the fastest? Bermuda grass is the fastest-growing warm season grass, germinating in as little as 10 days. Ryegrass, which grows in cool climates, also germinates that quickly.

Can you put too much grass seed down? ›

Too much grass seed causes undue competition for resources such as light, water and nutrients, and grass seedlings struggle as a result. Too little seed leaves lawns thin or bare.

How much will a 25 lb bag of grass seed cover? ›

$26.99
Size25 Lb.
Coverage - New Lawn3750 Sq. Ft.
TypeBlack Beauty-100% Tall Fescue
Coverage - Overseeding Established Lawn7500 Sq. Ft.
StyleMedium Texture, Extra Dark Green Color
5 more rows

What does the right amount of grass seed look like? ›

Most seed bags will recommend a range such as 250-400 square feet per pound. Seeding a new lawn or spot repair usually takes roughly twice as much seed as overseeding an existing lawn. Use the rate with the heaviest coverage for new lawns and to fill in bare or damaged areas.

How many bags of grass seed do I need for 1 acre? ›

When seeding new turf grass, we recommend a seed rate of 4-7 lbs of seed per 1,000 square feet (the equivalent of 175-250 lbs per acre).

How much does a 5 lb bag of grass seed cover? ›

This mix withstands drought and wear from high traffic, and the 5 lb. bag covers up to 1,500 sq. ft.

How much grass seed do I need for 1/4 acre? ›

For forage production or wild-land meadows, you only need 10 to 20 lb of of grass seed per acre. Some intensive forage production requires more, such as 30 to 40 lb of seed per acre, especially when growing hay for export markets or to sell for making feed pellets or cubes.

How many pounds of overseeding is 1000 square feet? ›

General rule of thumb

For the best results, calculate your grass seed needs by type of seed and square footage. Otherwise, a general rule of thumb is 3-4 pounds of grass seed per 1,000 square feet for new lawns and 1-2 pounds of grass seed per 1,000 square feet for overseeding.

How much will a 40 lb bag of grass seed cover? ›

A: A 40 pound package will cover 420 square feet, so you will need approximately 3 bags.

How many square feet does a 10 pound bag of grass seed cover? ›

This mix withstands wear from drought and high traffic, and the 10 lb. bag covers up to 2,500 sq. ft.

Can you put grass seed on top of an existing lawn? ›

Overseeding can help you get back to the thick, lush, green lawn you've always wanted. By spreading grass seed over your existing lawn, you can thicken up the thin areas, and your lawn will start to look terrific again. (This is different from reseeding, which is when you start over and plant a completely new lawn.)

Do I need topsoil for overseeding? ›

When overseeding, use compost, not topsoil. Compost provides more nutrients and moisture than topsoil. Compost breaks down to increase soil performance. Topsoil will not provide the optimal habitat for grass seeds and it won't break down over time, leading to an unsightly, dirty yard.

Should I fertilize before overseeding? ›

Stop fertilizing for at least a month before overseeding. The fertilizer makes your grass grow faster, which makes it harder for the new seeds to take hold.

Should I water immediately after overseeding? ›

It's critical that you properly water your lawn after aeration and overseeding. Not doing so could have negative results such as a lawn that won't grow, wasted money, or needing to re-seed all over again. It's important to keep in mind that lawn care is a partnership between you and your lawn care company.

Should I mix grass seed with topsoil when overseeding? ›

Should you mix grass seed with topsoil? If you're looking for a quick answer, yes, you should mix grass seed with topsoil for small areas of your garden and other applications.

How long should I water my lawn after overseeding? ›

You need to keep the soil moist but you don't want to water for too long. This generally means watering twice a day but for a short period of time (maybe 15 to 20 minutes).

What is the hardiest grass seed? ›

Tall fescue

It is one of the most drought-resistant turfgrass varieties. As a cool-season grass type, tall fescue would fare best in northern climates. In the summer, tall fescue can benefit from overseeding with warm-season grass seeds.

Does grass grow faster at night or day? ›

Does Grass Grow More at Night? No, grass does not grow more at night. Night or darkness itself does not cause grass to grow more than it would during the day. However, increased moisture and cooler temperatures can improve the growth rate of grass and many other plants in hot, dry climates or at the peak of summer.

What fertilizer makes grass grow faster? ›

Nitrogen (N) promotes rapid growth and lush, green color. Phosphorous (P) helps develop healthy root systems. Starter lawn fertilizers have a high phosphorous count for this reason, while fertilizers for established lawns have a relatively low amount.

How much does a 5 lb bag of grass seed cover? ›

This mix withstands drought and wear from high traffic, and the 5 lb. bag covers up to 1,500 sq. ft.

Can you put too much seed on your lawn? ›

Too much grass seed causes undue competition for resources such as light, water and nutrients, and grass seedlings struggle as a result. Too little seed leaves lawns thin or bare.

How much does 20kg of grass seed cover? ›

Coverage Guide
Grass seed needed, sown at:
Area (m) (m²)20g/m²50g/m²
Average car space: 4.8 x 2.4 11.52230g576g
One hectare 10,000m210 bags of 20kg12.5 bags of 20kg
One acre 4,047m210 bags of 20kg12.5 bags of 20kg

How much does a bag of grass seed cover? ›

Most seed bags will recommend a range such as 250-400 square feet per pound. Seeding a new lawn or spot repair usually takes roughly twice as much seed as overseeding an existing lawn. Use the rate with the heaviest coverage for new lawns and to fill in bare or damaged areas.

How much will a 40 lb bag of grass seed cover? ›

A: A 40 pound package will cover 420 square feet, so you will need approximately 3 bags.

How much will a 25 lb bag of grass seed cover? ›

You need approximately 5 pounds of grass seed per 1,000 square feet. Therefore, 25 pounds of grass seed would cover about 5,000 square feet.

How many bags of grass seed do I need for 1 acre? ›

When seeding new turf grass, we recommend a seed rate of 4-7 lbs of seed per 1,000 square feet (the equivalent of 175-250 lbs per acre).

Can I just throw grass seed down on existing lawn? ›

Overseeding can help you get back to the thick, lush, green lawn you've always wanted. By spreading grass seed over your existing lawn, you can thicken up the thin areas, and your lawn will start to look terrific again. (This is different from reseeding, which is when you start over and plant a completely new lawn.)

Should I put topsoil over grass seed? ›

Do not put top soil over grass seed, but you can add a thin layer of organic matter to help the seed to germinate. 'Never put topsoil over newly planted grass seed,' says Yamaguchi. 'This won't provide healthy growing conditions – it will actually prevent the seedlings from sprouting by essentially suffocating them.

Should I mix grass seed with topsoil when overseeding? ›

Should you mix grass seed with topsoil? If you're looking for a quick answer, yes, you should mix grass seed with topsoil for small areas of your garden and other applications.

What should you cover grass seed with? ›

Though straw is the most commonly used cover for new grass seed, it is not the only option! Grass clippings, shredded leaves, a layer of compost, plastic sheeting, mulch, burlap, or peat moss can all be used to keep grass seed in place and protected.

How much topsoil do I need for grass seed? ›

Grass roots grow between 4 and 6 inches long, so a layer of topsoil that's 6 inches deep provides enough room for the roots to grow.

How long does grass seed last? ›

How Long Will it Last? When stored under these ideal conditions, grass seed should last between 10-18 months from the testing date without a significant decrease in the germination rate. After this time the seed can still be used, but each year after that will see the germination rate drop.

How much grass seed do I need for 1/4 acre? ›

For forage production or wild-land meadows, you only need 10 to 20 lb of of grass seed per acre. Some intensive forage production requires more, such as 30 to 40 lb of seed per acre, especially when growing hay for export markets or to sell for making feed pellets or cubes.

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