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If you want a greener, healthier St. Augustine lawn, choosing the right fertilizer matters a lot. This grass type has its own needs, and the best results usually come from products that match those needs well while fitting your lawn size, season, and whether you also want weed control. In this guide, we’ve rounded up the best fertilizer for St Augustine options based on the products provided, so you can compare them quickly and choose with confidence.
Our Top Picks at a Glance
| Product | Best For | Buy Now |
|---|---|---|
| Scotts Turf Builder Bonus S Southern Weed & Feed2 | Weed control plus lawn feeding | Buy |
| Sunniland St. Augustine Weed & Feed | St. Augustine-specific weed and feed use | Buy |
| SeedRanch St. Augustine Lawn 24-2-11 | Dedicated granular lawn feeding | Buy |
Best Fertilizer For St Augustine
1. Best Overall: Scotts Turf Builder Bonus S Southern Weed & Feed2
Scotts Turf Builder Bonus S Southern Weed & Feed2 is a strong pick if you want a single product that supports lawn feeding while also targeting weeds. For many St. Augustine lawn owners, that combination makes it especially practical during active growing periods.
This product is designed for lawns up to 5,000 square feet, which makes it a good fit for smaller to medium yards. Its 4.5 rating also suggests it has been well received by buyers looking for a simple lawn-care solution.
If your goal is to improve lawn appearance while handling weed issues in one application, this is one of the most convenient choices in the lineup.
Pros
- Combines weed control and fertilizing
- Suitable for 5,000 sq. ft.
- Strong customer rating
Cons
- May be more than you need if you only want fertilizer
- Only covers a moderate lawn area
2. Best For St. Augustine Lawns: Sunniland St.Augustine Weed & Feed
Sunniland St.Augustine Weed & Feed is a straightforward option made for St. Augustine grass. If you want a product that speaks directly to this turf type, it is an easy name to put on your shortlist.
It covers up to 5,000 square feet, making it practical for many residential lawns. With a 4.6 rating, it stands out among the provided products for overall buyer satisfaction.
This is a solid choice if your main priority is finding a lawn fertilizer aimed at St. Augustine grass with weed-and-feed convenience.
Pros
- Designed for St. Augustine grass
- Includes weed and feed functionality
- High customer rating
Cons
- Coverage may not suit larger properties
- Not a liquid formula
3. Best Value: SeedRanch St. Augustine Lawn 24-2-11
SeedRanch St. Augustine Lawn 24-2-11 is a granular fertilizer in a 50-pound bag, which makes it a practical option for people who prefer traditional lawn feeding. The larger bag size may appeal to homeowners with more area to cover or those who want fewer reorders.
It carries a 4.5 rating, which is encouraging for a product in this category. The name also makes it clear that it is tailored to St. Augustine lawn care, which can be reassuring if you want a more targeted choice.
If you want a fertilizer built specifically for this grass type and packaged for longer use, this one offers strong overall value.
Pros
- Made for St. Augustine lawns
- Large 50 lb. bag
- Strong buyer rating
Cons
- Higher upfront price
- Not as convenient as liquid options
4. Best Liquid Feed: St Augustine Grass Fertilizer 32 oz
This 32 oz liquid lawn food is marketed specifically for St. Augustine grass and offers a compact option for homeowners who prefer liquid feeding. Its formulation focus makes it easy to consider if you want a product meant to support this grass type directly.
The 4.1 rating is respectable, and the smaller bottle may suit users who want to test the product before committing to a larger supply. It is also a more budget-friendly option than some of the larger packages in this list.
For smaller lawns or those wanting a simple liquid fertilizer to add to their lawn care routine, this is a convenient pick.
Pros
- Made for St. Augustine grass
- Compact 32 oz size
- Lower cost entry point
Cons
- Smaller quantity
- Lower rating than some other options
5. Best Large Bottle Liquid: St Augustine Grass Fertilizer 1 Gallon
This 1-gallon version gives you the same St. Augustine-specific liquid lawn food idea in a larger format. If you’d rather buy once and have more product on hand, this bottle may be more convenient than the smaller 32 oz size.
It also holds a 4.1 rating, so it sits in the middle of the pack on customer feedback. The larger size can make sense for regular use or for lawns that need repeated applications over time.
If you like liquid fertilizer and want a bigger supply, this is a practical choice worth considering.
Pros
- Large 1-gallon size
- Made for St. Augustine grass
- Useful for ongoing lawn care
Cons
- Higher price than smaller bottle
- Still has a moderate rating
6. Best Balanced NPK: Advanced 16-4-8 Balanced NPK
Advanced 16-4-8 Balanced NPK is a liquid fertilizer positioned for spring and summer use and suitable for any grass type. That flexibility can be useful if your lawn care routine includes more than just St. Augustine areas.
Its 4.2 rating places it in a dependable middle range. Since it is a concentrated spray, it may appeal to people who want a liquid option with broad usability.
This product is a sensible choice if you want a balanced lawn food rather than something narrowly targeted to one turf variety.
Pros
- Balanced 16-4-8 NPK
- Liquid concentrated spray
- Works for any grass type
Cons
- Not exclusively made for St. Augustine
- Smaller 32 oz size
7. Best General Lawn Feed: Scotts Turf Builder Lawn Food Northern
Scotts Turf Builder Lawn Food Northern is a general lawn food option that covers 5,000 square feet. While it is not St. Augustine-specific, it is still a familiar lawn-care product that many homeowners recognize.
With a 4.6 rating, it shows strong customer approval. If you are looking for a simple lawn food rather than a specialized St. Augustine formula, it may still be useful in the right setting.
This is best viewed as a broader lawn fertilizer option rather than a targeted grass-specific pick.
Pros
- High customer rating
- Simple lawn food format
- Covers 5,000 sq. ft.
Cons
- Not made specifically for St. Augustine
- May not be the most targeted choice
8. Best For Greener Appearance: Scotts Green Max Lawn Food
Scotts Green Max Lawn Food is another general lawn food option with a 5,000 square foot coverage rating. It is intended for lawn feeding and is well positioned for users who care about overall appearance.
Its 4.4 rating suggests solid satisfaction among buyers. This product is worth considering if you like the Scotts line and want to support a greener-looking lawn.
Because the provided data does not make it St. Augustine-specific, it works best as a general lawn fertilizer option.
Pros
- Well-known brand
- Good customer rating
- Covers 5,000 sq. ft.
Cons
- Not specifically labeled for St. Augustine
- Generic lawn food rather than targeted feed
9. Best Mineral-Rich Option: Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen
Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen is a popular all-purpose fertilizer with a 6-4-0 analysis and a 32 lb bag. It is intended for lawns, flowers, and gardens, so it can work as a broader feeding solution.
The 4.6 rating is one of the stronger scores in this group. That makes it appealing for homeowners who want a well-reviewed fertilizer with slow-release nitrogen in the mix.
This is a good option if you want a versatile fertilizer rather than a St. Augustine-only product.
Pros
- Slow-release nitrogen
- Strong 4.6 rating
- All-purpose use
Cons
- Not made specifically for St. Augustine
- May be more general than some buyers want
10. Best Easy Application: Sunday Green Machine Fertilizer
Sunday Green Machine Fertilizer comes as a 2-pack liquid fertilizer and includes a universal sprayer attachment. That setup makes it appealing for people who want a fast and straightforward lawn application process.
It covers up to 10,000 square feet, which is more generous than several smaller-format products. With a 4.2 rating, it sits in a dependable middle range.
If convenience and coverage matter a lot to you, this is a practical liquid fertilizer choice.
Pros
- Includes sprayer attachment
- Covers up to 10,000 sq. ft.
- Easy application format
Cons
- Not specifically formulated for St. Augustine in the listing
- May be more than needed for small lawns
11. Best Professional Blend: The Andersons Professional PGF Complete 16-4-8
The Andersons Professional PGF Complete 16-4-8 is a granular fertilizer with 7% Humic DG and coverage for 5,000 square feet. It’s one of the more premium-looking options in the provided list.
Its 4.6 rating suggests strong buyer confidence. This makes it a good pick for shoppers who want a highly regarded lawn fertilizer with a balanced NPK profile.
Even though it is not labeled specifically for St. Augustine, it remains a strong general lawn-care option.
Pros
- High 4.6 rating
- Balanced 16-4-8 formula
- Includes 7% Humic DG
Cons
- Not exclusive to St. Augustine
- Higher price point
12. Best Multi-Ingredient Liquid: PetraMax Neighbor’s Envy Grass Fertilizer
PetraMax Neighbor’s Envy Grass Fertilizer is a one-gallon liquid concentrate with broad coverage up to 16,000 square feet. It is presented as a 7-in-1 formula, making it one of the more feature-rich products in the list.
With a 4.4 rating, it has a solid reputation among buyers. The inclusion of multiple components may appeal to homeowners looking for a more comprehensive liquid fertilizer.
This is a good option if you want a high-coverage liquid fertilizer for lawn and garden use.
Pros
- Large 1-gallon size
- Covers up to 16,000 sq. ft.
- Multi-ingredient 7-in-1 formula
Cons
- Not specifically made for St. Augustine
- May be more complex than needed for simple feeding
13. Best New Grass Support: Scotts Turf Builder Starter Food for New Grass
Scotts Turf Builder Starter Food for New Grass is designed for newly planted grass and is also suited to sod and grass plugs. That makes it a useful option if your St. Augustine lawn is newly established.
It covers 5,000 square feet and has a 4.5 rating, giving it a good blend of coverage and customer approval. The starter-food category also makes it different from standard lawn fertilizers.
If you are planting or repairing a St. Augustine lawn, this is a practical choice for the early stage.
Pros
- Made for new grass
- Also great for sod and plugs
- Strong rating
Cons
- Not intended as an everyday maintenance fertilizer
- Coverage limited to 5,000 sq. ft.
14. Best Budget Liquid: St Augustine Grass Fertilizer 8 oz
This 8 oz St. Augustine grass fertilizer is the smallest liquid option in the list. It is a simple way to try a St. Augustine-specific fertilizer without spending much upfront.
With a 4.1 rating, it lands in the same general range as the larger liquid version. That makes it a sensible choice for very small lawns or first-time users.
If affordability and small-format testing matter most, this is a practical budget-friendly option.
Pros
- Lowest-cost entry point
- Made for St. Augustine grass
- Good for testing before buying more
Cons
- Very small size
- May not last long for larger lawns
15. Best Weed and Feed Alternative: Fertilome St. Augustine Weed & Feed
Fertilome St. Augustine Weed & Feed offers another weed-and-feed path for homeowners focused on St. Augustine lawns. The 15-0-4 analysis makes it a recognizable lawn-care formula in this category.
It earns a 4.4 rating and comes in a 12.8 lb. bag, which may be easier to handle than heavier bags. This makes it a practical mid-size option for routine lawn care.
If you want a targeted St. Augustine weed and feed product with solid buyer feedback, it’s a worthwhile option to compare carefully.
Pros
- Made for St. Augustine weed and feed use
- Reasonable 12.8 lb. size
- Good 4.4 rating
Cons
- Not the highest-rated option in the list
- May not suit buyers who want only fertilizer
Buying Guide
Grass-Specific Matching
St. Augustine grass does best when the fertilizer fits the turf type and the season. Products made specifically for St. Augustine can be a smart starting point if you want a more targeted option.
Granular vs. Liquid
Granular fertilizers are often chosen for simple spreading and longer handling convenience, while liquid fertilizers can feel easier for quick application. The right format depends on your yard size and how you prefer to feed your lawn.
Coverage Size
Always check how much area a product covers. A fertilizer that works for 5,000 square feet may be perfect for one lawn and too small for another.
Weed and Feed vs. Fertilizer Only
If weeds are part of the problem, a weed and feed product can save time. If your lawn already looks clean, a fertilizer-only option may be the better fit.
Customer Ratings
Ratings can help you narrow down products that buyers have responded well to. In this list, several options are rated 4.4 or higher, which is a helpful sign when comparing similar products.
Frequently Asked Questions
What is the best fertilizer for St Augustine grass?
The best fertilizer for St Augustine depends on your goal. If you want weed control and feeding together, Scotts Turf Builder Bonus S Southern Weed & Feed2 and Sunniland St.Augustine Weed & Feed are strong choices from the provided list.
Should I choose liquid or granular fertilizer for St. Augustine?
Both can work well. Liquid fertilizers are often chosen for convenience and quick application, while granular options can be better for people who want a traditional spreading method.
Is a weed and feed product a good choice for St. Augustine lawns?
Yes, if weeds are part of your lawn-care goals. Products like Scotts Turf Builder Bonus S Southern Weed & Feed2 and Fertilome St. Augustine Weed & Feed are meant to handle both tasks together.
How much coverage should I look for?
It depends on the size of your lawn. Many of the products here cover around 5,000 square feet, while some liquid concentrates offer much more coverage.
Can I use a general lawn fertilizer on St. Augustine grass?
Some general lawn fertilizers can be used, but St. Augustine-specific products are often the safer starting point if you want a more targeted match.
Which option is best for a newly planted lawn?
Scotts Turf Builder Starter Food for New Grass is the most relevant option in the list if you are working with new grass, sod, or plugs.
Conclusion
Choosing the best fertilizer for St Augustine comes down to how you want to care for your lawn. If you want weed control and feeding in one product, Scotts Turf Builder Bonus S Southern Weed & Feed2 and Sunniland St.Augustine Weed & Feed stand out. If you want a dedicated St. Augustine fertilizer, SeedRanch St. Augustine Lawn 24-2-11 and the St. Augustine liquid options are strong contenders.
No matter which product you choose, the best results usually come from matching the fertilizer to your lawn size, format preference, and maintenance goals. With the options above, you can compare the top picks and find the one that fits your yard best.