Many homeowners treat St Augustine grass just like any other turf, which usually leads to a yellowing, patchy lawn that refuses to thrive.
Choosing the Best Fertilizers for Saint Augustine Grass requires a bit of patience, especially since this wide-bladed grass has very specific nutritional demands.
And if you want a yard that looks deeply green all season long, you need to match your soil's chemistry with the right liquid or granular formula. Let us look at the top choices currently available to help you make the right call.
Key Takeaways
- Prioritize nitrogen-heavy ratios because Saint Augustine grass requires higher nitrogen levels to maintain its vibrant green color.
- Select liquid formulations if you need fast nutrient absorption through both the roots and the leaf blades.
- Check the potassium content on the label to ensure your turf develops strong cellular walls and better disease resistance.
- Measure your lawn's exact square footage before purchasing to avoid buying too little product or running out halfway through the yard.
- Decide between hose-end sprayers and traditional broadcast spreaders depending on how much time you want to spend applying the treatment.
| Portable Growth Booster |  |
Liquid Lawn Food for St Augustine, 8 oz | Fast nutrient absorption | Great for small yards | Easy liquid application | View on Amazon | Read Review |
| Maximum Yard Coverage |  |
Liquid Lawn Food for St Augustine, 1 Gal | Covers large areas | Economical bulk sizing | Quick liquid action | View on Amazon | Read Review |
| Balanced Midsize Option |  |
Liquid Lawn Food for St Augustine, 32 oz | Perfect for medium yards | Simple hose-end application | Rapid absorption rate | View on Amazon | Read Review |
| Versatile Seasonal Nutrition |  |
Simple Lawn Solutions Balanced NPK, 32 oz | Works on multiple grasses | Balanced nutrient profile | Convenient spray bottle | View on Amazon | Read Review |
| Traditional Granular Feed |  |
Scotts Turf Builder Lawn Food | Timed nutrient release | Familiar application method | Feeds established turf | View on Amazon | Read Review |
| Long Term Nourishment |  |
Pennington Full Season Lawn Fertilizer | Full season feeding | High nitrogen content | Reduces application frequency | View on Amazon | Read Review |
More Details on Our Top Picks
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Liquid Lawn Food for St Augustine, 8 oz
St Augustine grass demands specific care, and this concentrated formula delivers nutrients directly where your yard needs them most. You will find this size ideal for spot treatments or very small turf areas where a gallon jug is simply overkill.
The liquid delivery system allows for rapid absorption through both blades and roots. But remember that an eight-ounce bottle finishes quickly on larger lawns, so plan to use it strictly for targeted patches.
- Form:Liquid
- Container Size:8 oz
- Additional Feature:Promotes thicker grass growth
- Additional Feature:Designed for St Augustine
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Liquid Lawn Food for St Augustine, 1 Gal
Large lawns require bulk solutions, and this one-gallon size provides enough liquid nutrition to cover substantial turf acreage without constant reordering. Property owners with expansive yards will appreciate the extended supply that lasts through multiple feeding cycles.
Liquid feeds go to work immediately upon spraying, bypassing the slow breakdown required by traditional solid granules. Just keep in mind that handling and storing a full gallon jug takes up real shelf space in your garage.
- Form:Liquid
- Container Size:1 Gal
- Additional Feature:Feeds thick St Augustine
- Additional Feature:Convenient gallon container
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Liquid Lawn Food for St Augustine, 32 oz
Finding the sweet spot between tiny trial bottles and heavy jugs is easy with this thirty-two ounce container. Medium-sized yards benefit from having enough product to complete a thorough feeding without heavy lifting.
You get the same rapid nutrient delivery characteristic of quality liquid lawn foods. The primary drawback is that multi-zone properties will still outgrow this container size rather quickly.
- Form:Liquid
- Container Size:32 oz
- Additional Feature:Supports thicker turf
- Additional Feature:Formulated for St Augustine
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Simple Lawn Solutions Balanced NPK, 32 oz
Spring and summer growth spurts demand a reliable nutrient ratio, and this balanced formula provides standard feeding support for various turf varieties. Gardeners managing mixed-grass properties find this flexible liquid spray adapts well to different lawn types.
Consistent application supports steady blade development during peak growing months. The limitation here is that specialized turf like St Augustine sometimes prefers custom nutrient ratios rather than standard blends.
- Brand:Simple Lawn Solutions
- Product Type:Lawn Food
- Form:Liquid
- Nutrient Ratio:16-4-8
- Container Size:32 oz
- Additional Feature:Spring and summer formula
- Additional Feature:Concentrated liquid spray
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Scotts Turf Builder Lawn Food
Granular fertilizers offer a familiar routine for homeowners who prefer spreadable solid pellets over liquid spray applications. This twelve-pound bag feeds turf gradually, releasing nutrients over time as you water the lawn.
Spreading granules evenly requires a mechanical drop or rotary spreader to avoid patchy green streaks. You also have to wait for irrigation or rainfall to activate the slow-release ingredients.
- Brand:Scotts
- Product Type:Lawn Food
- Form:Granular
- Container Size:12.5 lbs
- Additional Feature:Turf Builder formula
- Additional Feature:Feeds and thickens
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Pennington Full Season Lawn Fertilizer
Extended feeding cycles save you valuable time, and this high nitrogen formula keeps turf green for months at a time. Lawns needing a sustained nutritional boost respond well to the controlled release technology built into these granules.
Fewer applications mean less weekend yard work for busy property owners. The trade-off is that high nitrogen blends require precise water management to prevent any accidental turf burn during hot weather.
- Brand:Pennington
- Product Type:Lawn Fertilizer
- Form:Granular
- Nutrient Ratio:32-0-5
- Container Size:11.2 lbs
- Additional Feature:Controlled nitrogen release
- Additional Feature:Full season longevity