st.augustine seed


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Isn’t a lush green turf just a sight to behold in rains and sunshine alike? Not only do these look and feel absolutely amazing, but these also contribute to the natural process of earth’s restoration by doing their bit at the “grass-root level.”

An elaborate St. Augustine grass lawn could undeniably give you one of the most beautiful turfs. It is very popular in Florida and the Gulf states for its ethereal bluish-green dense beauty!

But as turf breeders would know, growing a St. Augustine could be a daunting task, especially from grass seed.

And, if you’re on the lookout for substantial information on how to get the process of growing St. Augustine just right, then you, my friend, have stumbled upon just the ideal comprehensive read for the purpose!

Simply read on to know more on this subject!

Good St. Augustine Grass Seeds & How to Grow Them

Growing a St. Augustine’s lawn using sods

The St. Augustine’s grass has a considerable tolerance to humidity and heat. The bluish-green blades develop quickly to form plush, dense turfs, and it’s adjustability to significantly saline soils, make it a perfect choice for coastal yards.

One of the easiest ways to get the process of growing a St. Augustine’s lawn done is to plant the plugs from the established turf.

The plugs are the rooted sod pieces, and when you plant them, they grow up to gradually fill in the spaces between them, giving you a full, luxuriant lawn.

Even though you can also buy St. Augustine’s sod, it will be a bit expensive than most other grass sods.

Planting a St. Augustine’s lawn from seeds

It can be considerably difficult to grow a St. Augustine’s lawn from seeds as it’s infamously bad at proliferating this way.

This is one of the primary reasons why we don’t get its seeds for sale that easily in the stores.

This is also why the St. Augustine’s sod farmers usually leave strips of the turf behind for a new St. Augustine’s to grow from instead of completely harvesting the previously.

However, some farmers who do breed and grow St. Augustine grasses for seed during their development and breeding cycles, do so by using “quantities of seed which is often selected and blended,” and planted in these exact quantities to procure a few other new

kinds of grass for different selections.

How to plant a St. Augustine’s lawn?

Estimate your lawn area

Measure the dimensions of your lawn and the kind areas that you want to plant. Purchase as much sod as you would require to fill in that area. Getting a tray of around 18 plugs will be sufficient to cover an area of approximately 32 sq.ft.

Prepare the area for planting

Remove all old sods and weeds using a sod-cutter, if you’re planning to regrow an existing lawn. Apply a “non-selective herbicide” for about 2 weeks before you plant, to kill all weeds and ensure it no residual is left behind to harm the new saplings.

Apply fertilizer and organic soil restorer

Do treat the soil using a natural or organic fertilizer and use a biological restorative agent to nourish it back to health. Since St. Augustine’s require a considerably fertile soil to grow, it’s not a good idea to skip this step. This will also help the sods fill in faster.

Water the area

Make sure to thoroughly water the ground before planting, as it makes the soil more pliable and accommodating to the roots of the plug, providing immediate moisture to them. However, do remember that the water should soak in thoroughly and not stagnate on the surface.

Dig in

Start by digging the holes in a diagonal planting pattern, so that each group creates a diamond. Space these holes 12 inches apart from each other ( the holes across the center of each diamond should be 15 inches apart). Dig each hole a bit larger, but of the same depth as the plug’s root ball.

Plant the plugs

Push the plug firmly into the hole ensuring that it’s level with the surrounding ground. If you think that the holes are a bit deep, use a little fertile soil to fill in the extra space.

Continue watering

Water the plugs daily until you see them firmly rooted and gradually spreading. It usually takes about 7-14 days for the roots to settle. After this, water every week unless there’s sufficient rainfall to do away with manual watering.

Screen for critters and diseases

A newly planted and gradually establishing St. Augustine’s lawn can fall prey to pests bugs and plant diseases, which can affect both its roots and turf. If you notice mildew or any brown spot beginning to manifest, do contact your local extension agency for treatment options.

Where and when to plant the St. Augustine seeds?

The St. Augustine grass grows and proliferates best in warm springs and summers when temperatures are normally between 80-100 degrees Fahrenheit. It develops full colors at approximately 10 degrees lower than the temperature which discolors and fades Bermuda grass.

It can tolerate some shaded places during hotter summers but can develop thin and spindly turf in densely shaded regions.

The grass can be grown in most soil types as long as it has proper drainage facilities and is fertile. The pH range for growing the St. Augustine grass should preferably fall between 5.0 to 7.5, but at higher levels than that, it could develop a chlorotic appearance.

St. Augustine’s has a tolerance for a salinity level of up to 6 mmhos, unlike the Bermuda grass which has only slight tolerance for high salinity.

If you’re planting the plugs or sods in the full sun, make sure to give it a minimum of 90 days “before your region’s first estimated fall frost” for the grass to develop. Since this grass develops rather quickly, it won’t be necessary to go over frequent checks and estimations.

Maintaining the lawn

When the new lawn begins to fill in, and the blades reach a “mowable” height, cut them with the mower. Make sure that the mower is set at 3-4 inches. Once the leaves start to turn bluish-green, water them regularly and add any organic lawn-food every 6-8 weeks for feeding the grass until they have filled in.


So, this was all about how to grow a beautiful, flourishing St. Augustine’s grass lawn and maintain it thereafter.

Wondering how to grow the perfect St. Augustine grass lawn? Look no further as the following read has got your covered on this!

How to Make St. Augustine Grass Spread Quickly and Grow Thicker

A thin lawn is not very attractive. If you’re growing impatient with your grass not covering your yard fast enough, this guide will help you make St. Augustine grass spread quickly, grow back, and form a thick cover for a beautiful lawn.

Are you looking for advice on how to get St. Augustine grass to spread faster and grow thicker? If so, then plant St. Augustine during summer and make sure you lay it down the right type of soil – preferably a well-aerated soil type. Apply phosphorus fertilizer and keep a good watering schedule to help with quicker root and foliage development.

You may also need to kill weeds early enough to prevent competition for nutrients and allow your lawn to grow thicker.

If you’re planning to lay sod or install St. Augustine plugs on your lawn, you’re probably wondering how long you’ll have to wait before the grass spreads and covers the entire lawn with its beautiful, lush green color.

Does St. Augustine Grass Spread?

Yes, St. Augustine grass has a dense growth pattern and spreads relatively fast in comparison to most types of warm-season turf-grasses. This fast spread is facilitated by above-ground shoots (stolons).

In addition, the fact that this grass species has good traffic tolerance means that it will still spread at a normal rate even when under use while it still hasn’t fully filled in.

I love the below product for St. Augustine lawns that I take care of. You can add this to most lawns and it will create the perfect growing condition and help your existing grass spread faster.

How to Make St. Augustine Grass Spread Faster

Get St. Augustine Plugs Online

Check out SodSolutions to order St. Augustine plugs and have them sent directly to your door from local sod farms.

Homeowners that don’t consider sodding as their preferred lawn method of establishing a lawn may have to wait for a bit longer before they have a filled-in, usable lawn.

However- you don’t always have to wait for so long because there’s always something you can do to make St. Augustine grass spread faster and grow thicker.

Here’s what you can do to help your St. Augustine lawn grow and spreads faster to cover your entire lawn:

1. Use the right type of soil

Before planting St. Augustine grass on your lawn, you may want to choose a soil type that best supports the growth and spread of this turfgrass variety. Some soil types (such as waterlogged soil) tend to inhibit the growth of St. Augustine by depleting underground oxygen supply.

For bare spots and uneven areas in your yard, you may need to add some topsoil, as this helps reduce pooling.

If your lawn is growing slowly and remains sparse or thin, the problem could be water-logging. This turfgrass does not grow and spread fast in compacted clay soils.

  • The best soil for St. Augustine grass is one that is well-drained (like sandy soil) with pH ranges from 5.0 to 8.5. A slightly acidic pH will still be great for faster growth and spreading.
  • For top-dressing a St. Augustine lawn, use either sandy loam soil or clean free-flowing sand. Use no or very little organic material.

To find out whether you have the appropriate soil type to facilitate the fast growth of St. Augustine, you can reach out to A&M’s AgriLife soil testing service, They’ll test your soil and brief you on its health and quality. Or pick up a DIY soil test kit and find out what you need to do to your soil to give the perfect environment for your St. Augustine to spread.

2. Stick to the appropriate maintenance schedule

You should ensure to draft and follow a weekly lawn maintenance schedule post-establishment. Effective maintenance comprises watering, fertilization, and mowing. This will speed up the spread of St. Augustine grass.

The appropriate mowing height for St. Augustine grass is 3.5-4 inches. It’s also important to use a high-quality, slow-release fertilizer that will promote St. Augustine’s growth.

Phosphorus-laden fertilizers are great for stimulating grass spread during the first few months post-establishment. Afterward, you can switch to normal nitrogen fertilizer. The appropriate amount is about 0.7lbs of “Nitrogen” per 1,000sqft. Be sure to read and follow the bag rate of your preferred fertilizer.

Proper watering/irrigation is also important. It entails watering multiple times daily during the first-week post-installation. For the second week, ensure to irrigate your St. Augustine grass sods/plugs up to at least half-an-inch of water.

By the sixth week, you should have scaled back the irrigation frequency to a point whereby you only water the lawn when necessary.

3. Plant St. Augustine grass during summer

Being a warm-season turfgrass, St. Augustine grows best during summer. You should, therefore, establish your lawn in mid-summer when conditions are great for the growth and spread of this grass species all over your lawn.

St. Augustine grass is usually dormant during the colder winter and fall seasons. Growing during these seasons is- thus- not recommended if you want a quick spread.

4. Control weeds effectively

Unwanted weeds within your lawn will compete for important nutrients with your St. Augustine grass. Weed invasion can really hinder the growth and spread of the desired plant species.

It’s crucial to effectively get rid of weeds in your lawn to make St. Augustine spread quickly and grow thicker. Common notorious grass weeds that can slow down the growth and spread of St. Augustine grass include crabgrass, dallisgrass, and most broadleaf weeds.

How long does it take for St. Augustine plugs to spread?

Normally, it takes about 7-14 days for newly installed St. Augustine grass plugs to begin spreading, following firm root establishment in the soil.

Once the rapid growth/spreading starts- however- the amount of time it will take for the bare spots on your lawn to be completely filled in may vary, depending on the plug spacing you choose.

Below, we take a look at the various plug installation spacing methods that will determine how quickly your St. Augustine grass plugs spread.

High-Density Plug Installation

This method requires a 6-11-inch spacing between the sprigs, creating ample room for healthy root development. When the roots are able to tap adequate nutrients from the soil despite such close spacing, your chances of ending up with a fast fill-in are higher.

Typically, you should have a fully-filled, thick lush green lawn within a year if conditions are perfect.

Typical Density Plug Installation

This density choice requires St. Augustine grass plugs to be spaced out about 12-18 inches from each other. With this density, the St. Augustine grass plugs will spread at a slower rate and you’ll have to endure a longer fill-in duration for bare spots on your lawn.

On the upside, it’s more cost-effective compared to high-density plug installation, as you won’t have to use lots of sprigs to cover up your entire lawn.

Low-Density Plug Installation

This option requires a 13-24 inch spacing- and is recommended for lawns that experience low foot traffic since it takes time for the St. Augustine plugs to fully spread out over the entire lawn with such wide spacing.

Typically, it takes well over a year for St. Augustine grass to spread and fully fill in over a regular-sized backyard lawn.

Can You Buy St. Augustine Grass Seed?

Short answer, no. You don’t need to seed a yard with St. Augustine. This grass type comes in plugs or cuts of squares and this is what you will plant in your yards. Using plugs is much cheaper upfront but requires a few weeks of patients while it fills in. Keep on reading to learn how to help it spread out faster and healthier.

In a nutshell…

Just to recap what’s been discussed – St. Augustine grass is a fast-spreading turfgrass species. However, you can still improve this spread-rate by considering a few aspects. But always start with a soil test so you know how to treat your yard properly for optimal growth.

The rate at which St. Augustine grass spreads depends on various factors including- soil type, lawn maintenance routine, and the time of planting/installation.

If you want St. Augustine grass to spread faster, plant during summer and make sure you lay down the right type of soil- preferably a well-aerated soil type. Apply phosphorus fertilizer adequately and keep a good watering schedule to help with quicker root and foliage development. Also, kill weeds early enough to prevent competition for nutrients.