Many homeowners choose a random bag of fertilizer off the shelf and hope for the best. St. Augustine grass is notoriously finicky, and treating it like any other turf often leads to yellowing or stunted growth.
You need a strategy tailored to its specific nutrient demands. Here is a look at the Best Fertilizers for Saint Augustine Grass to help you keep your lawn deeply green and healthy.
Key Takeaways
- Prioritize formulas that specify St. Augustine compatibility to avoid burning your sensitive turf.
- Check the NPK ratio on the label to ensure you provide the right balance of nitrogen, phosphorus, and potassium for your local soil conditions.
- Decide between liquid applications for quick absorption or granular options if you prefer a slow release of nutrients throughout the season.
- Verify whether your chosen product includes pre-emergent herbicides to stop weeds before they appear among your grass blades.
- Factor in the total square footage of your lawn to determine if a concentrated liquid or a heavy bag of granules provides the best coverage.
| Best Overall Liquid |  |
Liquid St. Augustine Lawn Food | Promotes thicker grass growth | Easy liquid absorption | Covers large lawn areas | View on Amazon | Read Review |
| Ideal Spot Treatment |  |
Compact St. Augustine Liquid Food | Perfect for small patches | Simple to store away | High quality liquid formula | View on Amazon | Read Review |
| Balanced Maintenance Choice |  |
Mid-Sized St. Augustine Liquid Food | Great for medium lawns | Rapid nutrient uptake | Consistent growth results | View on Amazon | Read Review |
| Reliable Granular Classic |  |
Scotts Turf Builder Lawn Food | Widely available formula | Classic granular application | Encourages deep root health | View on Amazon | Read Review |
| Top Performance Nutrient |  |
Advanced 16-4-8 Balanced Liquid Fertilizer | Versatile balanced NPK | Highly concentrated spray | Promotes vigorous development | View on Amazon | Read Review |
| Best Weed Defense |  |
LESCO Weed and Feed | Handles weeds effectively | Professional grade strength | Feeds and protects simultaneously | View on Amazon | Read Review |
| Longest Lasting Feed |  |
Pennington Full Season Fertilizer | Long term nutrient release | High nitrogen content | Reduces application frequency | View on Amazon | Read Review |
More Details on Our Top Picks
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Liquid St. Augustine Lawn Food
You should pick this if you want a consistent growth booster that covers a large yard. It works like a concentrated shot of espresso for your turf, helping it maintain a deep green color throughout the growing season.
This one-gallon jug is designed for those who prefer a straightforward liquid application rather than granular options. Just keep in mind that you will need a hose-end sprayer to distribute it evenly across your lawn.
- Brand Name:St Augustine Grass Fertilizer
- Product Type:Liquid lawn food
- Weight Or Volume:1 gallon
- Application Method:Hose-end spray
- Additional Feature:Concentrated formula for efficiency
- Additional Feature:Fast acting nutrient delivery
- Additional Feature:Promotes thicker turf density
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Compact St. Augustine Liquid Food
Sometimes you only have a few patchy areas that need a little extra attention. This eight-ounce bottle provides the exact same high-quality nutrients as the larger jugs but in a highly portable size.
It serves as a perfect solution if you want to address minor nutritional deficiencies without investing in bulk supplies. Because the volume is small, be careful to measure your square footage accurately so you do not over-apply.
- Brand Name:St Augustine Grass Fertilizer
- Product Type:Liquid lawn food
- Weight Or Volume:8 ounces
- Application Method:Spray application
- Additional Feature:Precise nutrient control
- Additional Feature:Great for touch ups
- Additional Feature:Easy to mix
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Mid-Sized St. Augustine Liquid Food
If you have a medium-sized lawn, this 32-ounce bottle hits the sweet spot for coverage. It delivers the nitrogen your grass craves to stay lush and vibrant while remaining simple to carry around the yard.
This fertilizer is fantastic for homeowners who value fast absorption over the slow-release nature of pellets. Just remember to apply it during the cooler parts of the day to avoid evaporation before the soil soaks it up.
- Brand Name:St Augustine Grass Fertilizer
- Product Type:Liquid lawn food
- Weight Or Volume:32 ounces
- Application Method:Hose-end spray
- Additional Feature:Consistent growth stimulation
- Additional Feature:Efficient liquid absorption
- Additional Feature:Easy for backyard storage
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Scotts Turf Builder Lawn Food
Granular fertilizer acts like a steady meal plan for your soil, feeding the roots over a prolonged period. This specific blend is a trusted industry standard for those who prefer the traditional spreader method of application.
It is particularly effective if you want a hands-off approach to lawn care throughout the season. Be aware that you must water your lawn thoroughly after spreading this to prevent any potential leaf burn.
- Brand Name:Scotts
- Product Type:Granular lawn food
- Weight Or Volume:12.5 pounds
- Application Method:Spreader
- Additional Feature:Builds strong root systems
- Additional Feature:Easy to distribute evenly
- Additional Feature:Standardized nutrient release
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Advanced 16-4-8 Balanced Liquid Fertilizer
When your grass needs a comprehensive nutrient profile, this balanced formula is a standout performer. The 16-4-8 ratio provides a healthy mix of nitrogen, phosphorus, and potassium to support vigorous plant development from spring through summer.
It works exceptionally well as a concentrated spray for any grass variety, making it a versatile tool for your shed. Make sure you calibrate your sprayer correctly, as this liquid is potent and requires proper dilution for optimal safety.
- Brand Name:Simple Lawn Solutions
- Product Type:Liquid fertilizer
- Weight Or Volume:32 ounces
- NPK Ratio:16-4-8
- Application Method:Spray
- Additional Feature:Works on any grass
- Additional Feature:Spring and summer utility
- Additional Feature:Highly concentrated formula
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LESCO Weed and Feed
Dealing with unwanted weeds while trying to feed your grass can feel like a losing battle. This heavy-duty fifty-pound bag combines essential nutrients with Penoxsulam, which acts as a powerful agent to eliminate invasive weeds while helping your turf thrive.
It is clearly the best option for lawns that have become overrun with stubborn broadleaf invaders. Since it contains an active chemical for weed control, you should always wear protective gear during application.
- Brand Name:LESCO
- Product Type:Weed and feed
- Weight Or Volume:50 pounds
- Application Method:Spreader
- Weed Control:Yes
- Additional Feature:Contains Penoxsulam
- Additional Feature:Robust bag size
- Additional Feature:Targets broadleaf weeds
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Pennington Full Season Fertilizer
If you despise the chore of frequent fertilizing, this product offers a full-season solution that keeps on giving. Its 32-0-5 ratio is specifically engineered for extended feeding, meaning your lawn gets a steady supply of nitrogen for months.
This is a great investment for busy homeowners who want to set it and forget it. Just keep in mind that you cannot easily adjust the feeding schedule once it is down, so choose your application timing wisely.
- Brand Name:Pennington
- Product Type:Granular fertilizer
- Weight Or Volume:11.2 pounds
- NPK Ratio:32-0-5
- Application Method:Spreader
- Additional Feature:Full season coverage
- Additional Feature:Sustained growth support
- Additional Feature:Efficient nutrient delivery
