Fertilizer for St. Augustine grass is essential for maintaining a lush, green lawn that thrives in warm climates. The right fertilizer can enhance growth, improve color, and strengthen the grass against pests and diseases. In 2025, several top products stand out for their effectiveness, including slow-release options that provide nutrients over time and those specifically formulated for the unique needs of St. Augustine grass. Choosing the best fertilizer can make a significant difference in the health and appearance of your lawn.
SALE
−$6.02
Scotts Turf Builder Bonus S Southern Weed & Feed2, 5,000 sq. ft.
- For use on St. Augustinegrass (including Floratam), Centipedegrass, Zoysiagrass, and Carpetgrass
- One 17.24 lb. bag of Scotts Turf Builder Bonus S Southern Weed & Feed2 covers 5,000 sq. ft
- Scotts Turf Builder Bonus S Southern Weed & Feed2 weed killer plus fertilizer kills existing weeds as listed, and feeds grass to crowd out future weeds and build strong, deep roots
- Southern weed and feed controls dollarweed, clover, dandelion, chickweed, oxalis, henbit, purslane, and more as listed
- Apply to a dry lawn when grass and weeds are actively growing; product must be watered in immediately after application
$29.97
Scotts Turf Builder Southern Lawn Fertilizer for Southern Grass, 10,000 sq. ft., 28.12 lbs.
- Scotts Turf Builder Southern Lawn Food is a fertilizer specially formulated for Southern lawns
- The included Scotts All-in-One Particles build strong, deep grass roots to protect against heat and drought
- Apply this grass fertilizer to a wet or dry lawn during the growing season
- This lawn care product is safe to use on Southern grass
- One 28.12 lb. bag of Scotts Turf Builder Southern Lawn Food covers 10,000 sq. ft.
$46.99
SALE
−$4.25
Scotts Green Max Lawn Food, Lawn Fertilizer Plus Iron Supplement for Greener Grass in 3 Days, 5,000 sq. ft., 16.67 lbs.
- Scotts Green Max Lawn Food is a dual-action fertilizer and iron formula that feeds your lawn and provides deep greening in just 3 days
- This lawn care product contains 5% iron, a micronutrient that enhances the greening process for fast results
- Apply this fertilizer plus iron supplement to any grass type in the spring, summer, or fall
- Guaranteed not to stain concrete, driveways, or other surfaces surrounding your lawn (when used as directed)
- One 16.67 lb. bag of Scotts Green Max Lawn Food covers 5,000 sq. ft.
$33.24
SALE
−$4.99
Scotts Turf Builder Lawn Food - Fertilizer for All Grass Types, 5,000 sq. ft., 12.5 lbs.
- Scotts Turf Builder Lawn Food feeds and strengthens grass to help protect against future problems
- Fertilizer builds strong, deep roots and improves the lawn's ability to absorb water and nutrients (vs. unfed lawn)
- Apply lawn care product to a wet or dry lawn
- Grass fertilizer works on any grass type
- One 12.5 lb. bag of Scotts Turf Builder Lawn Food covers 5,000 sq. ft.
$22.00
Sunniland Weed & Feed 20-0-6 Lawn Fertilizer 5000 sq. ft. for St. Augustine - Total Qty: 1
- Easy to spread granules and easy to handle
- 2 applications in the spring and fall
- Can be used on all types of St. Augustine grasses
$39.95
Advanced 16-4-8 Balanced NPK - Lawn Food Quality Liquid Fertilizer - Spring & Summer Concentrated Spray - Any Grass Type - Simple Lawn Solutions (32 Ounce)
- Complete NPK Lawn Food: 16-4-8 is the perfect blend of key macronutrients. This lawn liquid food turf fertilizer also contains Seaweed & Fish.
- Contains High Quality Feed Grade Ingredients: Nourish your lawn with pure liquid Nutrients in a ready to use sprayer
- Easy To Use: Designed to be easily applied. This complete Nitrogen, Phosphate and Potash formula gives your grass greening & growth while providing nutrients for lush lawns
- All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass
- Produced In The United States: 16-4-8 is manufactured in the United States of America, by a family owned business with 25 years of former experience in the commercial professional turf industry.
$23.77
The Andersons Professional PGF Complete 16-4-8 Fertilizer with 7% Humic DG 5,000 sq ft
- Phosphorus-free fertilizer blend with fine particle size that includes humic acid, which helps increase turf quality and reduce nutrient requirements
- Contains MUtech coated slow release nitrogen to provide uniform growth and extended feeding
- DG particles do not rely on a physical coating to release nutrients. Coated fertilizers (used by our competitors) are very susceptible to damage from mowers, resulting in premature nutrient release.
- Small particle size gives you twice the number of particles per square foot. DG particle disperse quickly and completely when watered, moving directly into the soil.
- Not for sale in California or Oregon
$54.88
SALE
−$9.80
LESCO 50 lb. St. Augustine Grass Weed and Feed with Penoxsulam
- Lesco Professional, 50 LB, 13,00 SQFT, 17-0-17 St Augustine Turf Fertilizer
- 30% Poly Coated Sulfur Coated Urea, Specially For St. Augustine Grass
- Should Be Applied When Turf Is Wet, Allow To Dry & Total Results In 2 Weeks, Safe For Floratam Variety, Slow Release Providing Up To 8 Weeks Of Feeding
- Its very easy and elegant to use
$112.66
SeedRanch St. Augustine Lawn 24-2-11 Fertilizer - 50 Lbs.
- Includes 6% Iron for Excellent Greening.
- 12,000 Sq.ft Coverage
- Provides nutrients for St Augustine Lawns
$97.77
Fertilome (10915) St. Augustine Weed & Feed 15-0-4 (16 lbs.)
- This pre-emergent and post-emergent herbicide controls weeds and provides a 15-0-4 fertilizer mix.
- The fertilizer is designed for Centipede, Zoysia and St. Augustine lawns and grass types.
- Do not use this product on Bermuda Grasses or any other type of Northern grass.
- Apply the product in early spring for improved lawn health and weed defense throughout the season.
- Covers 2,500 square feet. Application varies by footage. See label for application instruction.
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Last update on 2025-05-03 / Affiliate links / Images from Amazon Product Advertising API