How To Make St. Augustine Grass Spread Quickly And Grow Thick?

St. Augustine grass is a fantastic choice for your house if you want a lush, thick lawn that is easy to maintain and resistant to weed development. But, how to make St. Augustine grass spread quickly?

St. Augustine grass, also known as buffalo grass in South Africa and Australia, is a thick, strong, carpet-like lawn grass species that thrive in hotter temperatures and forms lovely lawns.

St. Augustine grass is a shade-tolerant, thick and durable turf that can also survive the heat with adequate care and maintenance and a warm environment.

If you’re thinking of installing a brand-new gorgeous lawn in your house, you might be wondering how to make St. Augustine grass spread quickly?

This may be an easy task if you have the appropriate information on making St. Augustine grass spread quickly in a lawn. All you have to do now is take good care of your yard.

Does St. Augustine Grass Spread After Sodding?

Yes, St. Augustine grass spreads by runners above and below the earth. The sprouts and stolons expand swiftly when the grass firmly establishes after buggering in full sun and the soil is warm and moist.

Feeding your lawn with the right St Augustine fertilizer and sticking to a regular watering plan will help the grass expand quicker and fill up sparse spots.

How To Make St Augustine Grass Spread Quickly + Grow Thick?

There are several methods to make St Augustine grass spread quickly and grow thick so that your lawn seems green and healthy. Whether you’re starting from scratch or overseeding an existing lawn, the grass has to be in the ideal circumstances to thrive.

If you’re starting a new lawn and want to give your St. Augustine grass some extra nutrients, use a starter fertilizer before planting.

It will encourage the seeds to spread out throughout the soil rather than just sitting on top of it, allowing them to grow fast. Spread the seeds evenly across the ground while spreading them.

Here are some suggestions for keeping the ground healthy so that your lawn may have the correct St Augustine Grass to make it seem beautiful.

1. Prepare The Soil

Before you plant your St. Augustine grass on your lawn, make sure the soil is well-drained, ideally sandy, with a pH range of 5.0 to 8.5 and little clay.

This type of soil will best assist the growth and spread of this lawn grass. Avoid overcrowding the soil with compost.

Suppose your lawn has barren areas or uneven terrain. In that case, you may need to apply more topsoil composed completely of sandy loam soil or clean loose sand with very little organic matter to help prevent pooling and encourage the runners to spread faster.

2. Plant In Early Summer

The majority of people believe that grass can thrive in any season as long as it has the necessary nutrients. That is correct; nevertheless, it will operate differently in your scenario. I hope you’re still with me on how to speed up the spread of St. Augustine grass.

Because St. Augustine grass is a warm-season grass, it will grow more quickly throughout the summer months.

3. Use High Phosphorous Fertilizer

The pace of growth of the St. Augustine grass can be enhanced by fertilizing it. You’ll want to use a high-phosphorous fertilizer to obtain the best results. A high-phosphorus fertilizer stimulates the roots and encourages them to develop more quickly.

Use a lawn spreader to evenly and swiftly distribute the high-phosphorus fertilizer across your yard. Drop spreaders are more accurate, although broadcast spreaders may cover large areas of ground more quickly.

It’s also worth noting that applying a high-phosphorus fertilizer isn’t a long-term solution. Once the St. Augustine grass has covered your yard, you can use nitrogen fertilizer.

4. Proper Watering

After you’ve installed your lawn, you’ll need to water it several times a day to help it acclimatize to its new surroundings and spread fast. It might take up to seven days, so make sure you arrange enough time to care for your lawn.

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Water the grass daily for the next week, then several times a week for the weeks after that, until your grass has been in situ for six weeks. Your grass will have acclimated to your garden at this time, and you’ll only have to water it when it’s essentiaater

When St Augustine grass needs water, the color swatches, and the blades don’t react as well when you touch them.

Setting up a watering schedule for the first six weeks after your lawn is created can help the grass establish a strong root system in the soil.

To achieve quicker root development and thicker grass, you can use a garden hose or, better yet, regular watering with sprinklers. Drought stress may appear on your grass, but if you water it, it quickly recovers to its regular st Augustine grass growth rate.

5. Get Rid Of Weeds On Time

Weeds compete with grass for water and nutrients. Thus they must remove as soon as possible.

The easiest way to suppress weeds and allow the grass to develop and spread fast is to use a pre-emergent weed killer five weeks before planting.

Hand-picking random weeds are the best way to get the root up. You may also use a light weed-killing herbicide; just read the labels.

Weeds and crabgrass grow simultaneously, starting in the early spring and continuing through the summer. To keep crabgrass under control, use a crabgrass killer.

6. Mow High

You may mow the grass if it becomes too unruly after you’re satisfied that the sod has roots and entrenched its place in your landscape.

To provide the appearance of thicker blades, you must mow your St Augustine grass with a sharp blade.

We don’t recommend cutting your grass any shorter than a third of the way down the blades.

Due to the St Augustine blades’ broad and flat character, the thickest section of the blade is a third of the way down from the tip.

Cutting any lower will result in thinner-looking blades and, as a result, a thinner-looking grass.

How Long Does It Take St Augustine Grass To Spread?

Once the roots are securely established in the soil, it usually takes 7-14 days for the newly planted St. Augustine grass to begin to spread.

The length of time it takes to fill the empty patches, on the other hand, is mostly determined by how the plugs are placed.

The plug installation spacing approach you employ will impact how quickly your lawn grass spreads.

Installation Of High-Density Plugs

To support proper root growth, this installation requires 6-11 inch spacing between each spring.

If the circumstances are ideal, the roots will be able to absorb adequate nutrients from the soil, and you will have a full, thick, lush, beautiful green lawn within a year.

Installation Of A Typical Density Plug

This density necessitates a spacing of 12-18 inches between plugs, which means the St. Augustine plugs will spread more slowly, and you’ll have to wait longer to cover barren places in your grass.

This method is more cost-effective than the high-density strategy since you don’t have to employ as many springs.

Installation Of Low-Density Plugs

This approach necessitates a spacing of 13-24 inches between each plant, which is great for lawns with limited foot activity because the wide spacing will take a long time for your St. Augustine grass to spread and cover the whole lawn fully.

How To Make St. Augustine Grass Thicker?

Is the St. Augustine grass taking longer to develop than you expected? Do you require it to produce a thicket more quickly than it now does? This part is likely to put your mind at ease about such concerns.

Here are a few things you can do to make your St. Augustine grass grow thicker:


A sufficient supply of water is required for the development. As the days pass, the watering schedule should be reduced.

Fertilize The Area

This is a particular technique to induce St. Augustine to establish a thicket quickly. Depending on the growth stages, use phosphorous or nitrogen-based fertilizer for St Augustine grass.

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Weed depletes the nutrients required for plant development. As a result, the plants become feeble or possibly die. The sole safeguard is to remove any undesired plants from the yard.

You can use weed killer that won’t kill grass or using weed pullers.

Check The Ph Of The Soil

St. Augustine grass thrives in a pH range of 5 to 8.5. Of course, a higher or lower PH will result in slower growth or possibly severe yellowing of the plants.

As a result, you can add baking powder or any other alkali to enhance the acidity for a lower PH. You may need to use vinegar or another acid-based liquid to reduce the PH.

Improve The Soil Quality

This grass thrives in well-aerated soils. What if your lawn dirt isn’t the same as everyone else’s? If the soil is clay or any other waterlogged soil, you should switch to a different grass type.

To return to what I was saying, you may use sandy soil as the top layer of the lawn for semi-aerated soil.

Why Do The Runners Of St. Augustine Pile Up On Top Of Each Other?

A thick St. Augustine lawn comprises a dense network of interlaced runners. Sometimes, especially in the spring, when the grass emerges from hibernation and begins to grow vigorously, these runners do not grow near to the surface.

The grass begins to lose form and seems to not fill in the thin patches when the runners grow on top of each other rather than spreading across the soil’s surface.

Nutrient deprivation can cause St. Augustine runners to spread over one another rather than attaching to the soil and competing for resources.

When Do St. Augustine Grassroots Grow Fast?

The St. Augustine grass spreads rapidly in the summer, but it grows slowly in the winter.

St. Augustine grass is a warm-season grass that should be planted during the summer months to give it the best chance of growing and spreading fast.

However, it is critical to water the grass regularly, particularly when hot and dry.

After you’ve planted the grass sods or plugs, they may need to be watered several times a day, especially in the first several weeks. Once the lawn has been established, it will not require regular watering.

The pace at which the grass grows influences the temperature, shade, moisture control, and nutrients. The grass will stay dormant throughout the winter and may not require as much irrigation or upkeep.

Why Is The Grass In St. Augustine Turning Yellow?

It’s concerning to notice your St. Augustine grass starting to lose its distinctive color and take on a more yellowish hue. But don’t get too worked up about it because it’s an issue you can solve.

Because there has been too much rain recently, the St. Augustine grass is most likely turning yellow. All of the rain may have washed nitrogen from the soil.

Start using a dry or granular fertilizer to solve the problem. Dry fertilizer aids in the resolution of the issue by gently releasing the nutrients required by the grass, and the nutrients don’t flow out of the soil because of the delayed release.


That brings us to the end of our article on ways to make St Augustine grass spread quickly. The ultimate effect will be determined by whether you use grass sods or plugs, as the latter will require you to consider how to distribute the grass rapidly.

However, if you’re using sods, make sure your preparatory work is up to standard and that you have a solid watering and fertilizing routine in place. To keep the thickest blade section visible, don’t mow it too short.

When it comes to plugs, making sure your grass is happy and healthy can help it grow thicker and spread out more quickly. You’ll also need to decide how far apart you’ll put the plugs, as the wider apart they are, the longer it will take to produce an even St Augustine lawn.

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