The Texas sun is already beating down on your lawn by nine in the morning. You stand there holding a heavy bag, waiting for the humidity to break so the grass can actually absorb the nutrients you are about to spread. Dealing with the unique climate of the Lone Star State is a challenge.
Finding the Best Fertilizers for St Augustine Grass in Texas requires a focus on soil health and seasonal timing. You need products that handle our specific heat and weed pressures effectively. Keep reading to see which options match your lawn goals.
Key Takeaways
- Prioritize fertilizers containing Atrazine if you need to tackle weeds while simultaneously feeding your turf.
- Focus on slow release nitrogen formulas to ensure a steady supply of nutrients throughout the intense summer heat.
- Verify the NPK ratio on the bag because St. Augustine grass typically thrives with a higher nitrogen and potassium balance.
- Consider liquid applications if your primary goal is a quick green up or if you need to treat a smaller patch of struggling grass.
- Select products explicitly labeled for iron supplementation if your soil is alkaline, as this prevents common yellowing issues in our region.
| Best Overall Maintenance |  |
Sunniland St. Augustine Weed and Feed | Combines feeding and weeding | Simple granular application | Effective for St. Augustine | View on Amazon | Read Review |
| Rapid Growth Booster |  |
Liquid St. Augustine Lawn Food | Absorbs quickly into blades | Promotes thick green color | Encourages lateral spread | View on Amazon | Read Review |
| Targeted Bare-Spot Fix |  |
Scotts EZ Patch Repair Mix | Retains essential moisture | Includes fertilizer and mulch | Repairs small lawn damage | View on Amazon | Read Review |
| Heavy Duty Nourishment |  |
SeedRanch St. Augustine 24-2-11 Fertilizer | Large capacity bag | High nitrogen content | Professional grade formula | View on Amazon | Read Review |
| Pro-Grade Weed Defense |  |
Fertilome St. Augustine Weed and Feed | Dual weed control action | Specifically formulated for St. Augustine | Effective nutrient ratio | View on Amazon | Read Review |
| Versatile Seasonal Feed |  |
Simple Lawn Solutions Balanced Liquid | Easy hose application | Balanced nutrient profile | Rapid absorption rate | View on Amazon | Read Review |
| Reliable General Maintenance |  |
Scotts Turf Builder Lawn Food | Strengthens root systems | Improves heat resistance | Simple, predictable results | View on Amazon | Read Review |
| Steady Growth Specialist |  |
Sunniland Slow Release Nitrogen Fertilizer | Slow release nitrogen | Phosphorus free | Prevents growth surges | View on Amazon | Read Review |
| Defense Against Pests |  |
Scotts SummerGuard Insect Control | Dual fertilizer and insecticide | Targets common turf pests | Protects against summer damage | View on Amazon | Read Review |
| Instant Color Enhancer |  |
Scotts Liquid Green Max | Rapid greening effect | Added iron supplement | Easy liquid spray | View on Amazon | Read Review |
More Details on Our Top Picks
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Sunniland St. Augustine Weed and Feed
This is the go-to choice for homeowners who want to handle two jobs at once. Because it includes both fertilizer and herbicide, you can nourish your lawn while actively knocking back unwanted weeds.
It works best for established lawns that need a consistent nutrient boost. Just be aware that because it contains weed control chemicals, you should avoid applying it near garden beds or ornamental plants.
- Brand Name:Sunniland
- Formula Type:Granular
- Coverage Area:5,000 sq ft
- Additional Feature:Dual action weed control
- Additional Feature:Easy spread application
- Additional Feature:Promotes dense turf growth
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Liquid St. Augustine Lawn Food
When your grass looks a bit sparse, liquid food is your best friend for encouraging new runners. This formula absorbs quickly through the blades to provide an immediate pick-me-up for tired turf.
This is ideal for spot treatment or quick recovery after a dry spell. You might find that it requires more frequent applications than granular versions since it lacks the slow release profile of solid fertilizers.
- Brand Name:St. Augustine Grass Fertilizer
- Formula Type:Liquid
- Package Weight:1 Gallon
- Additional Feature:Supports new runner development
- Additional Feature:Rich green color enhancement
- Additional Feature:Quick nutrient uptake
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Scotts EZ Patch Repair Mix
Think of this as a first aid kit for your lawn. If you have small, ugly patches where the grass has died off, this mulch and fertilizer blend provides the perfect environment for new growth to take hold.
It is specifically formulated to retain moisture, which is crucial for success in the scorching Texas sun. Keep in mind that this is not meant for your entire yard, just those specific, stubborn bare spots.
- Brand Name:Scotts
- Formula Type:Granular mix
- Coverage Area:170 sq ft
- Package Weight:3.75 lb
- Additional Feature:Encourages new growth
- Additional Feature:Protects delicate seeds
- Additional Feature:Easy to spread
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SeedRanch St. Augustine 24-2-11 Fertilizer
If you are dealing with a massive property, this large bag is a cost-effective solution. The high nitrogen count ensures your grass stays deep green and grows vigorously throughout the season.
The nutrient balance is tailored specifically for the demanding needs of St. Augustine. Because of the large bag size, make sure you have adequate storage space in a cool, dry area.
- Brand Name:SeedRanch
- Formula Type:Granular
- Nutrient Ratio:24-2-11
- Package Weight:50 lbs
- Additional Feature:Sustained release performance
- Additional Feature:Ideal for large lawns
- Additional Feature:Boosts overall vigor
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Fertilome St. Augustine Weed and Feed
This is a sophisticated tool for those who take their lawn aesthetic seriously. It uses Atrazine, which is highly effective at controlling pesky broadleaf weeds without harming your specific grass type.
It works as both a pre-emergent and post-emergent treatment, meaning it stops weeds from showing up and kills the ones already there. Be careful not to use this on other grass types, as it is strictly engineered for St. Augustine and similar varieties.
- Brand Name:Fertilome
- Formula Type:Granular
- Nutrient Ratio:15-0-4
- Key Ingredient:Atrazine
- Package Weight:25.6 lbs
- Additional Feature:Stops new weed growth
- Additional Feature:Kills existing broadleaf weeds
- Additional Feature:Promotes thick turf
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Simple Lawn Solutions Balanced Liquid
This liquid spray is excellent for a quick mid-season boost. Because it is balanced, it provides a gentle, well-rounded meal for your lawn rather than forcing rapid, weak growth.
You can spray this easily with a hose-end attachment, making it very convenient for homeowners with busy schedules. It covers a wide range of needs, though it won't provide the long-term staying power of granular options.
- Brand Name:Simple Lawn Solutions
- Formula Type:Liquid
- Nutrient Ratio:16-4-8
- Package Weight:32 Ounce
- Additional Feature:Spring and summer use
- Additional Feature:Suitable for all grasses
- Additional Feature:Concentrated liquid formula
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Scotts Turf Builder Lawn Food
Sometimes you just need a dependable standard to keep the lawn ticking over. This formula is designed to build strong roots and help the grass handle environmental stress like heat and drought.
It is very user-friendly for those who don't want to overthink their lawn care routine. While effective for general health, it lacks the specific weed-killing additives found in other specialized bags.
- Brand Name:Scotts
- Formula Type:Granular
- Coverage Area:5,000 sq ft
- Package Weight:12.5 lbs
- Additional Feature:Enhances nutrient absorption
- Additional Feature:Works on all grasses
- Additional Feature:Consistent feed quality
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Sunniland Slow Release Nitrogen Fertilizer
Slow-release nitrogen is the secret to a healthy lawn that doesn't need to be mowed every three days. This formula feeds your grass gradually, preventing the dangerous surges of growth that can stress out your turf.
Because it is phosphorus-free, it is a responsible choice for regions where runoff is a concern. It is best for homeowners who prefer a consistent, low-maintenance approach to long-term lawn care.
- Brand Name:Sunniland
- Formula Type:Granular
- Coverage Area:5,000 sq ft
- Nutrient Ratio:20-0-6
- Package Weight:20 lbs
- Additional Feature:Sustainable nutrient delivery
- Additional Feature:Environmentally conscious formula
- Additional Feature:Consistent turf color
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Scotts SummerGuard Insect Control
Summer in Texas brings more than just heat; it brings unwanted lawn insects. This product manages to feed your grass while simultaneously putting a stop to damaging pests that live in the soil.
It is a great choice if you notice small brown patches or signs of infestation during the warmer months. Use this when you need to handle two problems with a single application.
- Brand Name:Scotts
- Formula Type:Granular
- Coverage Area:5,000 sq ft
- Package Weight:13.35 lbs
- Additional Feature:Controls damaging insects
- Additional Feature:Promotes green growth
- Additional Feature:Easy bag application
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Scotts Liquid Green Max
When your grass looks yellow and tired, iron is the magic ingredient to bring back that deep, vibrant green. This liquid supplement works almost immediately to improve the visual appeal of your lawn.
It is a two-in-one product that feeds the grass while correcting iron deficiencies. Keep in mind that this is primarily for color and light feeding, so it shouldn't replace your full-cycle fertilizing schedule.
- Brand Name:Scotts
- Formula Type:Liquid
- Package Weight:32 oz
- Additional Feature:Improves turf appearance
- Additional Feature:Works on all grasses
- Additional Feature:Fast-acting results
Frequently Asked Questions
How many times a year should I fertilize St. Augustine grass?
You should aim for three to four applications annually. Start your first round in the spring once the grass has fully greened up and is actively growing. Space out your subsequent feedings every six to eight weeks until early fall.
Is it okay to fertilize if we are in a drought?
Never fertilize a drought stressed lawn. Fertilizer encourages the grass to grow when it should be conserving energy, which can permanently damage your turf. Wait until you have received significant rainfall or can properly irrigate the area before applying any nutrients.
Should I water after applying fertilizer?
Yes, watering is essential to wash the granules off the leaf blades and down into the soil. Use about one quarter inch of water immediately after application to prevent fertilizer burn. This helps the nutrients reach the roots where they can actually do some good.
Why is my grass turning yellow even after I fertilized?
Yellowing often happens because the soil pH is too high, preventing the grass from taking up iron. You might be dealing with iron chlorosis rather than a nitrogen deficiency. Adding a liquid iron supplement usually fixes the color issue within a few days.
Can I use the same fertilizer for my flower beds and lawn?
It is better to keep them separate. Your lawn needs high nitrogen for leaf growth, but your flowers usually need higher phosphorus to support blooming. Using a lawn fertilizer in your flower beds will likely result in a lot of foliage but very few flowers.
