3.6 out of 5 Customer Rating
Scotts® Turf Builder® Rapid Grass Sun & Shade Mix® is rated 2.9 out of 5 by 163.
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Scotts

Turf Builder Rapid Grass Sun & Shade Mix

$48.49
3.6 out of 5 Customer Rating
Scotts® Turf Builder® Rapid Grass Sun & Shade Mix® is rated 2.9 out of 5 by 163.
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Scotts
Turf Builder Rapid Grass Sun & Shade Mix
$48.49

Want a beautiful lawn, like, yesterday? Rapid Grass is the fastest way to get there. Our unique seed and fertilizer combination grows grass fast. You'll see a full, green lawn in just a few weeks. It's the speed you want and the quality you expect.

18213

Key Features

  • GROWS 2X FASTER: We've combined our high-performance seed and fertilizer into a mix that grows grass 2X faster than seed alone*
  • A LAWN IN JUST WEEKS: This isn't your average grass seed; our formula is designed for speed, so you can go from bare ground to a thick, green lawn in just weeks
  • WORKS IN SUN AND SHADE: Don't stress about your yard's tricky spots; this versatile mix is made to grow a thick, beautiful lawn in areas with a lot of sun or moderate shade

*when applied at the new lawn rate; subject to proper care

Let's be real. When you want a new lawn, you want it now. Scotts Turf Builder Rapid Grass pairs high-performance seed with a jump-start fertilizer, so it grows grass 2X faster than seed alone when applied at the new-lawn rate (subject to proper care). That's the difference between waiting all summer and having a lawn for the next barbecue. Whether you're starting a new lawn from scratch or overseeding an existing one, you'll see a thick, green lawn start to come in after just a few weeks. It’s a revolutionary product that gives you the beautiful lawn you want, faster than you thought possible. At Scotts, we go to great lengths to bring you the freshest grass seed available, and if you're not happy with your results, you're covered by the Scotts No-Quibble Guarantee.

Fertilizer Analysis: 13-0-0 NPK

Grass Type(s): Contains Kentucky bluegrass, perennial ryegrass, creeping red fescue, and chewings fescue

Coverage:

  • New Lawn: 835 sq. ft.
  • Overseeding: 2,800 sq. ft.

Product Size: 5.6 lb.

SKU: 18213

Product Label

This is not the product label. Always read and follow the product label before use.

Safety data sheet can be found at: https://www.scottsmsds.com

Where to Use: Rapid Grass is your secret weapon for starting a new lawn from scratch or thickening up a thin one. The Sun & Shade Mix is perfect for those typical northern lawns that get a mix of sun and shade throughout the day.

When to Use: The sweet spot for planting cool-season grasses is spring or fall. Aim for those nice, mild days when the temperature is hovering between 60°F and 80°F.

How Often to Use: For best results, overseed your lawn once a year to keep it thick and healthy.

Seeding Projects: Use this grass seed to start a brand new lawn or to overseed the lawn you already have

For a New Lawn:

  1. Get the Ground Ready: Grab a rake and loosen up the top couple of inches of soil, clearing out any rocks or dead grass.
  2. Spread the Good Stuff: Pour the product into your Scotts spreader, dial in the "New Lawn" setting, and apply it evenly.
  3. Gently Tuck it In: Lightly rake the seed and fertilizer mix into the top layer of soil. You just want it barely covered.
  4. Give it a Drink: This part is key. Water daily (or as needed) to keep the soil moist until the new grass is at least 2 inches tall.

For Overseeding:

  1. Get Your Lawn Ready: Mow your lawn nice and short (about 2 inches). Then, give it a good rake to loosen the soil and clear out any dead stuff.
  2. Time to Spread: Fill up your spreader, set it to the "Overseeding" setting, and walk at a steady pace to get even coverage.
  3. Just Add Water: Water every day, or as needed, to keep the soil damp until the new seedlings are at least 2 inches tall.

New Lawn:

  • Scotts Broadcast/Rotary Spreaders: 15
  • Scotts Hand-Held Spreaders: 5 (4 passes)
  • Scotts Drop Spreaders: 16 1/2 (4 passes)
  • Scotts Wizz Spreader: 6 (2 passes)
  • Scotts Elite Spreader: 11

Overseeding:

  • Scotts Broadcast/Rotary Spreaders: 6
  • Scotts Hand-Held Spreaders: 5
  • Scotts Drop Spreaders: 17
  • Scotts Wizz Spreader: 5 1/4
  • Scotts Elite Spreader: 7

To get that grass to pop up fast, you'll want to water it twice a day for the first three weeks. An automatic timer can be a real lifesaver here. The goal is to keep the soil consistently moist, not to create a swamp.

  • Give the Mower a Break: We know you're eager to mow, but let the new grass grow to about 3 inches before its first trim.
  • Keep it Fed: To keep that awesome new lawn looking its best, give it a good meal every 8 weeks with a Scotts Lawn Food product.
  • Store it Smart: Keep any leftovers in the original bag and store it somewhere cool and dry, away from kids and pets.
  • Keep it Tidy: If any product ends up on your driveway or sidewalk, just sweep it back onto the lawn. This helps keep our local waterways clean.
  • Hold Off on Weed Control: Give your new grass a chance to get established. Wait until you've mowed it at least four times before you think about applying any weed control

How to overseed your current lawn

Overseed your lawn in 5 easy steps

Click through for instructions

Apply in these temperatures for best results 

Sun & Shade Mix: 60-80°F

Tall Fescue Mix/Southern Gold: 65-85°F

Bermudagrass Mix: 70-90°F

Step 1: Prep your Space

Mow grass to about 2" tall, or on your lowest mower setting. 

Rake the area and remove any debris.

Step 2: Fill your Scotts® Spreader

Refer to the dropdown menu below for the right Spreader setting for overseeding.

Step 3: Apply to prepared soil

Apply with your Scotts® Spreader, then lightly rake seeds into the soil.

Step 4: Water

Water 2X daily for at least the first 3 weeks.

Step 5: Mow

Mow when new grass is 2-3” tall.

Overseeding Spreader Settings

Sun & Shade Mix

  • Hand-Held Spreader: Setting 5
  • Broadcast/Rotary Spreader: Setting 6
  • Drop Spreader: Setting 17
  • Wizz Spreader: 5¼ 
  • Elite Spreader: 7

How to start a new lawn

Start a new lawn in 5 easy steps

Click through for instructions

Apply in these temperatures for best results 

Sun & Shade Mix: 60-80°F

Tall Fescue Mix/Southern Gold: 65-85°F

Bermudagrass Mix: 70-90°F

Step 1: Prep your space

Rake the area and remove any debris. Add 1” of Lawn Soil.

Step 2: Fill your Scotts® Spreader

Refer to the dropdown menu below for the right Spreader setting for starting a new lawn.

Step 3: Apply to prepared soil

Apply with your Scotts® Spreader, then lightly rake seeds into the soil.

Step 4: Water

Water 2X daily for at least the first 3 weeks.

Step 5: Mow

Mow when new grass is 2-3” tall.

New Lawn Spreader Settings

Sun & Shade Mix

  • Hand-Held Spreader: Setting 5
  • Broadcast/Rotary Spreader: Setting 15
  • Drop Spreader: Setting 16½ 
  • Wizz Spreader: Setting 6
  • Elite Spreader: Setting 11

Frequently Asked Questions

If I have Turf Builder Rapid Grass Sun & Shade grass seed left over after I finish applying it to my lawn, how do I store it?

Just keep the grass seed in the original packaging and store it in a cool, dry place like the garage or shed, safely away from kids and pets. For best results, the remaining grass seed should be used within the season after opening.

Patience is tough, but you'll see green shoots in about 6-12 days. In just a few weeks, you'll really see it start to fill in and look like a proper lawn.

Rapid Grass is built for bigger jobs like seeding new lawns and overseeding thin lawns to thicken them. For a few small bare spots, Scotts EZ Seed Patch & Repair is the better fit.

It's all about our product formula. We combined our best grass seed with a jump-start fertilizer. It gives the seed everything it needs to get growing in a hurry, so you're not waiting around.

Yes. When applied at the new-lawn rate and given proper care, Rapid Grass seed will grow twice as fast as planting grass seed alone. You'll typically see green shoots in about 6-12 days and a filled-in lawn within about 3-4 weeks.

Rated 5 out of 5 by from Botta bing botta bang the rapid grass took off! Followed instructions the best I could and the rapid grass was indeed rapid and is coming along quite well.
Date published: 2025-09-16
Rated 5 out of 5 by from Worked great! Fantastic! I just did the first mow on new grass. Four weeks from seeding to mowing!
Date published: 2025-06-24
Rated 5 out of 5 by from Worked Great I reseeded a section of our backyard that had very little grass. I aerated and loosened the top inch of the soil. I also added 3 pages of Scotts topsoil. After spreading, I raked the seed into the soil and covered the area with straw (we live in the woods with rodents and birds galore). Six weeks later and the new grass is plush and thick. I've mowed it 3 times. I also used some leftover seed to repair a dozen urine spots, and it has worked well filling these in. I'm pleased with this product and will continue using it.
Date published: 2025-06-09
Rated 5 out of 5 by from Fast results I prepared the soil by thatching the soil. Two weeks later the grass in coming up nicely! I am so excited! Great product!
Date published: 2024-10-09
Rated 5 out of 5 by from Product works great! I bought this a month ago and it germinated in 5 days.
Date published: 2024-09-14
Rated 5 out of 5 by from Awesome product Rye came up in 5 days. Red fescue next in about 10 days. I’m on day 16 and blue grass is 1/2 way up. I always have used Scott’s my entire life (I’m 65) and have always had great results seating my lawn with Scott products.
Date published: 2024-07-14
Rated 5 out of 5 by from Unbelievably Excellent Product!!!! I bought this product from Walmart in Cheyenne, WY and it’s coming in great! If you follow the directions I don’t see how you can fail. I had grass blades growing in about a week! Unbelievable product! Have already recommended it to friends.
Date published: 2024-06-27
Rated 5 out of 5 by from Very nice grass seed I will buy more this fall I planted the tall fescue last fall and it came up nicely. Now in the spring and early summer it looks like the rest of my grass. It blended well and is nice and mature. Other grasses I tried in the past would not look this good for another season. I like it.
Date published: 2024-06-13
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