How to Overseed a Lawn

By PropertyClub Team
Jun 15th 2024
If you have ever tried to create and maintain a lawn, you know it is hard work. Lush green grass does not just pop up overnight; it takes a lot of planning and care. And even if you take good care of your lawn, bare spots or thinning can occur. To fix these issues, you should overseed your lawn. Today we'll walk you through what overseeding is and how to do it.

hash-markTable of Contents

What Is Overseeding?
Why Overseed a Lawn?
How to Overseed Your Lawn
Best Time to Overseed a Lawn
Can You Use Tenacity When Overseeding?
How to Overseed a Lawn Bottom Line

hash-markWhat Is Overseeding?

Overseeding is a lawn care practice that involves planting new grass seeds over an existing lawn to improve its density, appearance, and health. Overseeding involves applying new grass to an already existing lawn without overturning the land. Overseeding is commonly used to rejuvenate thinning lawns and to fill in bare spots. 

hash-markWhy Overseed a Lawn?

Overseeding is very important because it makes your lawn more lush and green. When you first seed your lawn, you likely won't get every spot. The result is that your lawn might be bare in some areas or patchy. Overseeding is a way to fill these areas to give your yard a full body and make it look healthier.  

Aside from aesthetics, a properly overseeding lawn can help with things like drainage, preventing weeds, and landscaping integrity. So overseeding is vital for more than just looks. It also serves a significant function. 

hash-markHow to Overseed Your Lawn

  1. Prepare the Area
  2. Spread the Grass Seed
  3. Fertilize the New Lawn
  4. Water Sufficiently
  5. Maintain Your Lawn

1. Prepare the Area

You can't just toss grass seed wherever you want and expect to get good results. You need to prepare your lawn to uptake the seeds and let them grow properly. The first thing you should do is cut your lawn so it is very short and remove all the clippings. Next, take a rake to the soil to slightly loosen the turf. You only want to loosen the turf at this part, not overturn it. 

You want to mow your lawn shorter than usual because it will give the new grass more time to grow before being cut for the first time. If you try to cut freshly planted grass too early, it may rip out of the ground because the roots have not had time to take hold. Raking the soil also gives seeds a better chance to take hold and germinate. 

2. Spread the Grass Seed

Once you have adequately prepared the area, it's time to spread the seeds. You should already have a lawn spreader on hand from when you first set your lawn. If not, you can buy one from your nearest home improvement store.  

Start with one patch of your lawn and continue spreading in a methodical manner, making sure to get every spot. If you overseed unevenly, then your yard will consequently look uneven and non-uniform. 

If you have seeded a lawn before, then you should know how this process goes. One tip we have is to try to overseed your lawn on a day with low wind. If it is windy outside, then you will basically be wasting seed. Seeding on a non-windy day also helps ensure that your lawn is even and uniform. 

3. Fertilize the New Lawn

You cannot just spread your seed and call it a day. Your overseeded lawn needs proper care to make sure it takes hold and grows. The first thing to do is fertilize your new lawn. This will give the new seed nutrients so it can grow. The best option is to spread fertilizer in a uniform layer with a shovel and wheelbarrow. 

4. Water Sufficiently

New lawns also need water to grow. Try to water your lawn twice a day for the first week, then water as needed to respond to withering and growth. You do not want to overwater your lawn, as this can drown the seeds and kills them before they take root. 

5. Maintain Your Lawn

After approximately 3-4 weeks, your new grass should have taken hold, and you can return to your regular lawn maintenance. Regular maintenance for your lawn is critical for its health, and now you can enjoy a fuller and healthier overseeded lawn. 

hash-markBest Time to Overseed a Lawn

Like most things in landscaping, overseeding requires the right timing. Depending on the type of grass you have, the best time to overseed will differ depending on the season. 

For example, if you have cool-season grass like tall fescue, then the best time to perform overseeding is during the late summer and early fall seasons. Warm soil encourages the seeds to take root, and the cool air in the fall helps them grow. 

Alternatively, if you have warm-season grass such as Bermuda or Buffalo grass, the best time to overseed is in early winter. These grasses will then have the proper time to germinate during the colder months before they start growing at the onset of spring. Experts recommend overseeding warm-season grass about one month before the coldest part of the year. 

hash-markCan You Use Tenacity When Overseeding?

Yes, you can use Tenacity herbicide when overseeding a lawn. When using Tenacity during overseeding, you must follow the label instructions carefully to avoid damaging the newly seeded grass. Typically, the recommended time to apply Tenacity is when the weeds are actively growing and before the new grass seed has germinated. This allows the herbicide to effectively control the weeds without impacting the newly seeded grass. 

hash-markHow to Overseed a Lawn Bottom Line

Overseeding is a valuable lawn care practice that helps maintain a healthy, dense, and attractive lawn. By introducing new grass seeds into an existing lawn, homeowners can enhance its appearance, improve resilience to environmental stress, and reduce the presence of weeds. Proper timing, preparation, and maintenance are crucial for successful overseeding, ensuring a beautiful and robust lawn for years to come.