Best Fertilizer For St Augustine Grass
Home » Top 9 Best Fertilizer For St Augustine Grass (2021 Review)

Top 9 Best Fertilizer For St Augustine Grass (2021 Review)

Fertilizer is one kind of nutrients provider. We use them to make our soil enriched with proper minerals and nutrients and to get more production. There are different kinds of fertilizers are available in the market. Based on base materials, they are two types, organic and inorganic.

Best Fertilizer For St Augustine GrassSt Augustine grows best in summer as it is a warm-season grass, read more: It is commonly known as buffalo turf in Australia and buffalo grass in South Africa. If you are planning to make the lawn green with this grass, we are here to help you to find out a fertilizer that will improve your soil conditions and will give an excellent outcome.

Choosing a fertilizer for Bermuda grass can be a tough job if you are unfamiliar with your soil type. St Augustine has a bit less drought resistance than Bermuda grass, so you should choose your fertilizer carefully. Go through this article to get a brief idea about what fertilizer you should use.

#1 Fertilizer For St Augustine Grass

Advanced 16-4-8 Balanced NPK Fertilizer for St Augustine Grass

Advanced 16-4-8 Balanced NPK Fertilizer for St Augustine Grass

It is a liquid fertilizer and completely natural and organic, which makes sure healthy and green grass. It feeds soil perfectly by giving balanced nutrients. The perfect NPK ratio of 16-4-8 makes sure no lawn burns and maximum grass production. It helps to reduce Nitrogen, Potassium, and Phosphorus deficiencies. Considering its all usefulness, it is not only suitable for St Augustine Grass, but also an excellent choice for various other types of grass as well.
This fertilizer is biodegradable, which contains seaweed and fish. It has no potential threat to the environment, neither kids nor pets. It is a constant nutrients supplier to both soil and grass. It is very easy to use. Just link your hose pipe to the bottle and set the release amount and you are done. This fertilizer is made by Simple Lawn Solution. They have a long 25 years of experience in this field.

  • Product Dimensions: 5.5 x 3 x 9 inches
  • Product Weight: 3 pounds
  • Manufacturer: UAS of America


  • Perfect NPK composition
  • Natural and organic
  • Suitable for all type of grass
  • Easy to use
  • Complete nutrients provider


  • User may have issues with the dispenser

Check Latest Price

Available Types of Fertilizers for St Augustine Grass:

Depending on the soil type, fertilization will be different. You can take a look from the below list to choose the right one based on your locality.

Best Fertilizer for St Augustine Grass in Florida

Typical Florida has a sand type of soil structure. To be exact, North and Central Florida has got very sandy soil, and South Florida’s is shallow and has a high pH as a result of the influence of limestone bedrock. As gardening depends on the soil type and its available nutrients what sandy type soil has least, so it needs curing. You need to improve the soil and increase the pH level. Then depending on the soil, you can apply fertilizer which has got low phosphorus like fertilizer with NPK ratio of 16-4-8 or 15-0-15 or 17-5-11 per 1000 ft2. Slow-release nitrogen fertilizer and muriate of potash NPK 0-0-50 is also a good fertilizer.

St Augustine grass is very popular in Florida and commonly used in lawns. Keeping the soil type on the mind, you can use Advanced 16-4-8 Balanced NPK fertilizer as it is the best in Florida. It will provide balance nutrients to your soil and will help to grow a perfect lawn.

Best Fertilizer for St Augustine Grass in Texas

St Augustine is a popular grass in Texas because of its resilience since it is a warm-weather state. Once you are done with your lawn soil testing, you can apply fertilizer as needed. Since most of the soil already has plenty of phosphorus and potassium available, most of the time you only need to add a fertilizer with a great amount of nitrogen. If there is a lot of phosphorus on the soil, it may affect both surface and groundwater through surface runoff and infiltration. In this condition, organic and slow nitrogen release fertilizer is the best. Considering all situations, Florikan 17-5-11 Total Controlled Release Fertilizer will be the best solution in Texas which provides nitrogen and nutrients for the long term and will make sure of perfect green turf.

Caring for your Lawn and the Environment

Read useful information on lawn care

Here is a video to help you with choosing fertilizer for St Augustine Grass:

Need to go somewhere and do not have enough time? Allow us to help you. Just check out the table and let it will help you decide the best one.

Product NameCoverage AreaNPK Ratio
Advanced 16-4-8 BalancedVaries16-4-8
Natural Liquid Fertilizer 16-4-810 oz per 1000 sqft.16-4-8
Superior Nitrogen & Potash 15-0-151 gallon per 12,800 sqft15-0-15
Simple Lawn Solutions 1 gallon per 3,200 sqft.
Commercial Grade1 gallon per 3,200 sqft20-4-8
Florikan 17-5-11 9-14 lbs. per 1,000 sqft17-5-11
Urea Nitrogen FertilizerVaries46-0-0
Triple Super Phosphate1 cup per 100 sqft.0-46-0
Sustane 4-6-4 Organic Turf Starter and Overseeder FertilizerVaries4-6-4

The Best Fertilizer for St Augustine Grass

The top best product [hide]

Advanced 16-4-8 Balanced NPK Fertilizer for St Augustine Grass

Advanced 16-4-8 Balanced NPK Fertilizer for St Augustine Grass
This liquid fertilizer contains natural ingredients along with fish and seaweed. It has got premium NPK 16-4-8 balanced composition, due to what, this fertilizer is good for nature as a low release of phosphorus will keep nearby and underground water clean and no lawn burn issue. This is non-toxic and harmless to children and pets. With all these features, this is indeed the best fertilizer for St Augustine Grass. This natural liquid fertilizer is a perfect choice for a perfectly healthy and green lawn. You can purchase this without any hesitation.
Technical Specifications:
No harsh chemicals are present for what no stress to your lawn.
The excellent NPK ratio provides continuous nutrients supply to plants and soil.
Natural and organic components, easy to use.
Manufactured under professional surveillance.
Natural and organic fertilizer
Non-toxic and ecofriendly
Balanced NPK ratio
Perfect for all soil type
May face difficulties with the dispenser


Natural Liquid Fertilizer for St Augustine Grass 16-4-8 NPK Gallon

Natural Liquid Fertilizer for St Augustine Grass 16-4-8 NPK Gallon
This organic liquid fertilizer helps to maintain lush and green lawns longer throughout the season. It is a great source of nitrogen supply to both soil and plants. This fertilizer is bio-enhanced and got a balanced NPK ratio for what it can be a perfect supply of nitrogen, potassium, and phosphorus to plants. For its perfect NPK ratio, it is safe for nature as it has a minimum amount of phosphorus release to the soil what keeps the water safe from getting contaminated with phosphorus. All in all, this is a great fertilizer for St Augustine Grass. You can keep it on your consideration.
Technical Specifications:
The natural liquid fertilizer helps grass and plants to grow well.
It has a balanced ratio that ensures no stress to soil colloids.
Makes sure constant nutrients supply to soil and plants.
10 oz is well enough for 1,000 sqft area.
100% water soluble
Useable for fertigation system
Ensures healthy and perfect green grass
May not work in cold temperature


Superior Nitrogen & Potash 15-0-15 NPK

Superior Nitrogen & Potash 15-0-15 NPK
This fertilizer is a perfect natural liquid fertilizer that is not only phosphorus-free but also a great supplier of nitrogen and potash. This fertilizer makes sure that your lawn is getting proper food and giving a perfect St Augustine turf. This fertilizer increases nutrients rate and its Sulfur encourages disease resistance. It has Humic and Fulvic acid what boost plants' growth by enhancing nutrients uptake and increasing the transfer of fertilizer. Considering all situations, it’s a perfect fertilizer for St Augustine Grass in South Florida. All things considered; this is the perfect fertilizer for your lawn if you are looking for an eco-friendlier one. Just buy it and apply, see the result.
Technical Specifications:
Supreme quality natural phosphorus-free fertilizer.
Has balanced NPK 15-0-15 ration, makes no harm to the environment.
1 gallon can easily cover an area of 12,800 sqft.
Phosphorus free liquid fertilizer
10% of Sulfur increases disease resistivity
Hassle-free sprayer bottle
Price is a bit higher than other fertilizer


Simple Lawn Solutions Extreme Grass Growth Lawn Booster

Simple Lawn Solutions Extreme Grass Growth Lawn Booster
This fertilizer supplies sufficient nitrogen and phosphorus for the soil and grass. If your lawn is in deficiency of phosphorus, this can be the best solution. This is great for new sod, seeding or overseeding projects. Advance Humic and Fulvic acid formula make it a disease controller and high nutrients provider. It has high natural organic phosphorus, safe for both the environment and living beings. This is the best solution to phosphorus supply. If your land is suffering from phosphorus deficiency, then go for this fertilizer.
Technical Specifications:
It is a natural and liquid lawn grass growth-enhancing fertilizer.
It has high quality organic food-grade ingredients.
Concentrated, ready to use and great bottle with a hose-end sprayer.
Ready to use liquid fertilizer
Great for all soil and grass type
It has natural nitrogen and phosphorus
Phosphorus can affect your down water


Commercial Grade Lawn Energizer Fertilizer for St Augustine Grass

Commercial Grade Lawn Energizer Fertilizer for St Augustine Grass
Simple Lawn Solution has got the highest production rate fertilizer for you. This fertilizer can boost up the growth of St Augustine Grass immensely in any lawn. This is a natural liquid solution with a proper balanced NPK ratio for the highest production. This concentrated fertilizer can supply vitamins and nutrients to your lawn very conveniently. It can work on every type of soil. This fertilizer indeed is a booster for the grass. You can choose this one if you want more production.
Technical Specifications:
Natural and liquid lawn booster for any season.
Maintains lawn health, provides vitamins and treats nutrient deficiencies.
One gallon can easily cover an area of 3,200 sqft.
Vitamins and nutrients provider
Natural and organic
Non-toxic to kids and pets
Overuse may cause a problem to grass


Florikan 17-5-11 Total Controlled Release Fertilizer

Florikan 17-5-11 Total Controlled Release Fertilizer
This is polymer-coated and a slow nutrients release fertilizer. This can supply nutrients for a very long time to soil and plants. It has got the perfect NPK composition and polymer-coated formula. That makes it the best slow-release fertilizer for St Augustine Grass. It creates no stress to soil and supplies proper nitrogen to grass and plants. For its balanced nutrients releasing ratio, it does not burn up the lawn. If you want to remain tension free for a long to and want your soil to get balanced and proper nutrients, then this fertilizer is your best solution.
Technical Specifications:
Fertilizer with 100% polymer coating.
Best slow nutrients releasing fertilizer for plants.
The perfect NPK ratio does not burn up the lawn.
9-14 lbs. are enough to fertilize an area of 1,000 sqft.
Long term nutrients releaser
Balanced NPK ratio
Ideal for all types of grass
Price is a bit overpriced compared to other fertilizers


Urea Nitrogen Fertilizer for St Augustine Grass

Urea Nitrogen Fertilizer for St Augustine Grass
This fertilizer is the best source of nitrogen to your soil and plants. If any lawn is in nitrogen deficiency, this fertilizer can be the quickest solution. It provides natural nitrogen to both soil and plants. It can be a booster for St Augustine Grass in terms of giving healthy and perfect turf. This fertilizer promotes deep green grass and fast release of nitrogen. Though this is a synthetic fertilizer, harmless to the environment and living creatures. This fertilizer is the best solution to nitrogen deficiencies. Whenever your soil needs nitrogen, feed this to your soil.
Technical Specifications:
Capable of providing supreme quality nitrogen.
Ensures deep green, healthy grass.
Synthetic fertilizer but no danger to the environment.
The maximum supply of nitrogen
Synthetic but non-toxic
Easy use and resealable packaging
Too much nitrogen can burn up the grass


Triple Super Phosphate Fertilizer for St Augustine Grass

Triple Super Phosphate Fertilizer for St Augustine Grass
This complete super phosphate package is ready to meet the phosphate deficiency in the soil and plants. This is a granular form of fertilizer that feeds plants quickly. In terms of St Augustine Grass, this fertilizer can immensely help to grow healthy and greener. This fertilizer is granular and easy to use. 1 cup of this fertilizer can easily cover 100 sqft. area. If your St Augustine Grass needs phosphate, use this to get the constant and best supply of high-quality nitrogen.
Technical Specifications:
Powerful phosphate supplier to both soil and plants.
Economical and easy to use.
Feeds plants quickly.
Highest quality phosphate
Boosts blooms like magic
Encourages healthy root
Phosphorus can contaminate down water


Sustane 4-6-4 Organic Turf Starter and Overseeder Fertilizer for St Augustine Grass

Sustane 4-6-4 Organic Turf Starter and Overseeder Fertilizer for St Augustine Grass
To ensure the availability of the nutrients in late summer to St Augustine Grass, this fertilizer is the best choice. Its balanced NPK ratio is not going to burn the lawn and will make sure a healthy and green lawn. This is also the best starter fertilizer for any grass or plants. Its key components are sulfate of potash, turkey litter, and feather meal, in short, totally organic. If you are living on hot weather or looking for a late summer nutrients provider, this is a perfect solution.
Technical Specifications:
Best natural nutrients provider for late summer.
Perfect NPK ratio what is not going to cause a lawn burn.
Completely organic and biodegradable.
Organic and natural
Complete nutrients provider
Harmless to children and pets
Not for cold weather


Fertilizer for St Augustine Grass – Buying Guide

Choosing the right fertilizer for your St Augustine Grass might be a challenge for you as there are many fertilizers available in the market. Here we will try to guide you on this query

What Types of Fertilizers for St Augustine Grass Exist?

The first that will pop up in your mind is should you go with the organic or synthetic fertilizer. Should it have heavy doses of nitrogen or potassium or phosphorus? Well, there are several types available in the market.

  • Organic: This is typically the best solution for any lawn. It has no chance to burn your lawn and also it will make sure that your lawn and grass are getting proper nutrients. Yet, Advanced 16-4-8 Balanced NPK can be considered the best liquid fertilizer available for St Augustine Grass.
  • Synthetic: Also known as inorganic. There are tons of synthetic fertilizers are available in the market. The thing you should keep in mind that these are instant nutrients suppliers. Use these only when your lawn and grass are in a great deficiency of nutrients.

When to Fertilize St Augustine Grass?

Fertilization depends on soil type and grass type. Depending on your soil, and the need for your grass you should feed them. For this, practice using organic fertilizers for healthy and strong grass by providing proper nutrients along with making a friendly and harmless environment. However, you can fertilize your grass by the below schedule, but it is advised to conduct a soil test for better results.

February – May: Apply a complete fertilizer with an NPK ratio of 16–4–8 at the rate of 1 lb. nitrogen per 1000 ft2. A complete fertilizer will contain all three Nitrogen, Potassium and Phosphorus nutrients.

June – August: Fertilizer with slow nitrogen release can be a good solution for this time-bound. You can also fertilize using 1 lb. of nitrogen per 1000 ft2. fertilizers without phosphorus are good for this time.

September – November: It is good to apply 1 lb. of slow nitrogen release fertilizer per 1000 ft2. For North Florida use this a complete fertilizer. For South Florida use this for September and October. No nitrogen is required after that. Apply 1 lb. of potassium per 1000 ft2 using 1.6 lbs muriate of potash (0–0–60) or 2 lbs of potassium sulfate (0–0–50) before one month of the expected first frost. This will increase the winter hardiness of the grass. You should not apply potassium during hot periods or low moisture conditions.

December – February: you do not need to do fertilization during this time.

How Often Do You Need to Fertilize St Augustine Grass?

The continuation of fertilizing depends on lawn and soil types and their need. If you use slow nutrient release fertilizer, you can apply fertilizer after a long break. Though to maintain green color in your grass, you can apply Iron every 6 weeks.

Other Things You Should Keep in Mind

Along with fertilization, there are other things that you should keep in mind.

  • Mowing: To maintain a perfect St Augustine turf by keeping your grass height even, you can use a rotary mower. You can keep 3-inch grass on a low maintaining lawn where it is advised to keep 2.5-inch grass on high maintaining lawns. You should use a sharp blade while mowing your lawn.
  • Irrigation: For a lawn, the most important thing is irrigation. Irrigate your lawn properly to tackle drought. Based on the soil type, you can apply water to your lawn every 7 to 14 days during winter. The rest of the time you can water your lawn at 3 to 4 days interval.
  • Weed Control: Proper mowing and fertilizing your land can control the weed. Healthy and strong turf can also be a way to control the weed. Applying herbicides may result sometimes by damaging your lawn. So be careful to use herbicides, use if it is only necessary and your lawn is healthy.
  • Insect Control: You must control the insect to get the best lawn. You should look for white grubs who usually eat roots. If there is any existence of them found, then you can use pesticides.
  • Thatch Removal: Undecomposed leaf blades, stolon, roots and crowns intermixed with soil is known as thatch. If you over-fertilize your lawn or overwater or mow your lawn improperly, then thatch may develop. You should clean them up to get a beautiful lawn.
  • Disease Control: if your lawn gets expose to any disease, you should take the necessary steps. Mainly these occur from overwatering and over-fertilizing your lawn. So, to get a healthy, strong and green St Augustine turf, you should follow fertilizing rules. Also, if get lawn gets affected by fungus, you use a fungicide to control the issue.
  • Nematode Control: Take proper steps to control it because nematodes will weaken your grassroots.

Lawn Fertilization

Read a detailed guide on how to effectively fertilize your Texas grasses during the warm season

Fertilizer for St Augustine Grass - FAQ

How often should you use Advanced 16-4-8 Balanced NPK on your lawn?

Every 4 weeks.

Should Natural Liquid Fertilizer 16-4-8 NPK Gallon be mixed with surfactant?

You can just pour it in a hose-end sprayer.

Can you use Superior Nitrogen & Potash 15-0-15 NPK on cool-season grasses?

Yes, you can use it for all grasses.

How many gallons of water need to add with Simple Lawn Solutions Extreme Grass Growth Lawn Booster?

You do not need to dilute it; it is already concentrated.

Can Commercial Grade Lawn Energizer be used over patches of newly seeded grass?

Yes, and it is good to keep the grass seed moist.

Our top pick: Advanced 16-4-8 Balanced NPK

This fertilizer is manufactured with more than 25 years of experience by Simple Lawn Solution. It has got the perfect NPK concentration what ensures proper and constant nutrients supply to grass and doesn't burn up the lawn. It is 100% natural and organic, perfect for all types of soil and harmless to living animals and the environment. Considering all these issues, the best fertilizer for St Augustine Grass is Advanced 16-4-8 Balanced NPK.

Check price


A beautiful lawn with St Augustine Grass is real peace of mind. To ensure your perfect turf lawn, you need to choose the best fertilizer for St Augustine Grass.
With the best fertilizer, you can provide proper nutrients to soil and get a healthy and strong grass lawn of yours. You just need to find the right fertilizer which is perfect for your lawn by understanding you

See also: