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20 Best Lawn Fertilizer For St Augustine Grass (2022 Updated)

Fertilizer is important for lawns because it provides nutrients that grass needs to be healthy and green. A good fertilizer for St. Augustine grass should have a balance of nitrogen, phosphorus, and potassium.

It should also be slow-release so that the nutrients are released over time, rather than all at once.

20 Best Lawn Fertilizer For St Augustine Grass

Product Image Product Name Features Price

The Andersons PGF Complete 16-4-8 Fertilizer with Humic DG 5000 sq.ft.

  • Improve your soil health, lawn health, plant health, and reduce the use of fertilizers
  • Environmentally friendly, OMRI listed. User friendly; can be blended with fertilizers or used alone

FoxFarm Cha Ching Soluble Fertilizer 1 lbs.

  • Cha Ching is a high-phosphorus fertilizer that won’t leave a salty residue.
  • All the essential elements you need to support juicy fruit on compact, stocky plants.

Milorganite 32 lb. Slow-Release Nitrogen Fertilizer

  • Eco-friendly
  • Slow Release, feeds up to 3 months
  • Aids in root development

Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb

  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time

FoxFarm – Soluble 1 lb Trio Pack

  • A trio of high-octane fertilizers
  • Open Sesame is designed to bring plants into bloom at your command
  • Beastie Blooms for building amazing buds and flowers

Jack's Classic Blossom Booster 10-30-20 Fertilizer 1.5 lb

  • Blossom Booster 10-30-20 is a Professional formula designed to produce more flowers and brighter colors on all indoor and outdoor plants.

Grow More – Water Soluble 20-20-20, 25 lbs

  • General purpose water soluble fertilizer for plants grown in soil.
  • Can be used in both soil and foliar applications.
  • Multiple sources of Nitrogen for staggered release.

J R Peters 52008 Jacks Classic 20-20-20 All Purpose Fertilizer 8-Ounce

  • Free Measuring Spoon Enclosed For Easy And Precise Application
  • Features The Highest Safety Factor To Prevent Burning When Applied As Directed

Advanced Nutrients – Rhino Skin 1 L

  • Increases heat, diseases, and stress resistance.
  • Increases trichome structures and potency.
  • Strengthens plants allowing them to produce and support larger flowers.

Miracle Gro 4.5 lbs. Shake N Feed All Purpose Plant Food

  • Formulated with micro nutrients to help plants grow stronger and be more productive
  • Contains kelp, earthworm castings, feather meal, and bone meal

Espoma Organic Plant-tone Plant Food, 8 Lbs

  • Complex blend of 100% natural & organic ingredients to provide complete and balanced feeding
  • Enhanced with Bio-tone beneficial microbes

Miracle-Gro Shake 'N Feed All Purpose Plant Food Plus Weed Preventer, 4.5 lbs

  • One application feeds plants and prevents weeds for up to three months.
  • Easy use applicator.
  • Treats a minimum of 135 square feet.
The Andersons PGF Complete 16-4-8 Fertilizer with Humic DG 5000 sq.ft.
  • Improve your soil health, lawn health, plant health, and reduce the use of fertilizers
  • Environmentally friendly, OMRI listed. User friendly; can be blended with fertilizers or used alone
FoxFarm Cha Ching Soluble Fertilizer 1 lbs.
  • Cha Ching is a high-phosphorus fertilizer that won’t leave a salty residue.
  • All the essential elements you need to support juicy fruit on compact, stocky plants.
Milorganite 32 lb. Slow-Release Nitrogen Fertilizer
  • Eco-friendly
  • Slow Release, feeds up to 3 months
  • Aids in root development
Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb
  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time
FoxFarm – Soluble 1 lb Trio Pack
  • A trio of high-octane fertilizers
  • Open Sesame is designed to bring plants into bloom at your command
  • Beastie Blooms for building amazing buds and flowers
Jack's Classic Blossom Booster 10-30-20 Fertilizer 1.5 lb
  • Blossom Booster 10-30-20 is a Professional formula designed to produce more flowers and brighter colors on all indoor and outdoor plants.
Grow More – Water Soluble 20-20-20, 25 lbs
  • General purpose water soluble fertilizer for plants grown in soil.
  • Can be used in both soil and foliar applications.
  • Multiple sources of Nitrogen for staggered release.
J R Peters 52008 Jacks Classic 20-20-20 All Purpose Fertilizer 8-Ounce
  • Free Measuring Spoon Enclosed For Easy And Precise Application
  • Features The Highest Safety Factor To Prevent Burning When Applied As Directed
Advanced Nutrients – Rhino Skin 1 L
  • Increases heat, diseases, and stress resistance.
  • Increases trichome structures and potency.
  • Strengthens plants allowing them to produce and support larger flowers.
Miracle Gro 4.5 lbs. Shake N Feed All Purpose Plant Food
  • Formulated with micro nutrients to help plants grow stronger and be more productive
  • Contains kelp, earthworm castings, feather meal, and bone meal
Espoma Organic Plant-tone Plant Food, 8 Lbs
  • Complex blend of 100% natural & organic ingredients to provide complete and balanced feeding
  • Enhanced with Bio-tone beneficial microbes
Miracle-Gro Shake 'N Feed All Purpose Plant Food Plus Weed Preventer, 4.5 lbs
  • One application feeds plants and prevents weeds for up to three months.
  • Easy use applicator.
  • Treats a minimum of 135 square feet.

1. The Andersons PGF Complete 16-4-8 Fertilizer with Humic DG 5000 sq.ft.

The Andersons PGF Complete 16-4-8 Fertilizer with Humic DG 5000 sq.ft.

  • Improve your soil health, lawn health, plant health, and reduce the use of fertilizers
  • Environmentally friendly, OMRI listed. User friendly; can be blended with fertilizers or used alone

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Sold By Price
Amazon.com – Seller
eBay
The Andersons
Exit 15 Corporation

Product Details

Specifications

Details
Product Dimensions 15 x 14 x 4 inches
Country of Origin USA

Reviews From Real Customers

Donald B.

2. Preen 16 lb Weed Preventer Plus Plant Food

Preen 16 lb Weed Preventer Plus Plant Food

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Amazon.com
eBay
Rural King
Blain’s Farm & Fleet

Product Details

Specifications

Details
Organic No
Product Form Granules
Season Use Multi-Season
Concentrated No
Fertilizer Analysis (N-P-K) 9-12-9
Container Size 16 lb
Active Ingredient Trifluralin
Time Release Slow-Release
Coverage Area 2560 sq ft
Product Type Weed Preventer & Fertilizer
Application Frequency 3 Months
Brand Name Preen

3. FoxFarm Cha Ching Soluble Fertilizer 1 lbs.

FoxFarm Cha Ching Soluble Fertilizer 1 lbs.

  • Cha Ching is a high-phosphorus fertilizer that won’t leave a salty residue.
  • All the essential elements you need to support juicy fruit on compact, stocky plants.
  • Cha Ching creates juicy, robust fruit with essential oils.
  • Use to maximize a plant’s production.
  • Feed with every other watering.

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Amazon.com – Seller
eBay
Walmart
Grow Green MI

Product Details

Specifications

Details
Container Size 1 lb.
Product Type Soluble Fertilizer
Fertilizer Analysis 9-50-10
Brand Name FoxFarm

Reviews From Real Customers

123troyce
david_777_222

4. Milorganite 32 lb. Slow-Release Nitrogen Fertilizer

Milorganite 32 lb. Slow-Release Nitrogen Fertilizer

  • Eco-friendly
  • Slow Release, feeds up to 3 months
  • Aids in root development
  • Contains non-staining iron
  • Fertilizer Analysis is 6-4-0

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Sold By Price
Amazon.com – Seller
eBay – lironshin

Product Details

Specifications

Details
Assembled Product Weight 33.000 oz
Assembled Product Dimensions (L x W x H) 14.00 x 8.00 x 18.00 Inches

5. Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb

Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb

  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time
  • Used on golf courses for decades

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eBay
Walmart
Lowe’s

Product Details

Specifications

Details
Product Type Lawn Fertilizer
Organic Yes
Grass Type All Grasses
Fertilizer Analysis (N-P-K) 06-04-00
Application Conditions Dry
Product Type Slow-Release Nitrogen Fertilizer
Coverage Area 2500 sq. ft.
Container Size 32 lb.
Grass Type All Grass Types
Water Soluble No
Product Form Granules
Suitable for Vegetables Yes
Application Season All Seasons
Primary Usage Slow Release Nitrogen
Brand Name Milorganite

6. FoxFarm – Soluble 1 lb Trio Pack

FoxFarm - Soluble 1 lb Trio Pack

  • A trio of high-octane fertilizers
  • Open Sesame is designed to bring plants into bloom at your command
  • Beastie Blooms for building amazing buds and flowers
  • Cha Ching to maximize your plants’ production
  • Not sold in SD

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
Walmart – ProMax Commerce
BVV

Product Details

Specifications

Details
Weight 3.6 oz

Reviews From Real Customers

ken
integra2286
absolute-oreg*anics

7. Jack’s Classic Blossom Booster 10-30-20 Fertilizer 1.5 lb

Jack's Classic Blossom Booster 10-30-20 Fertilizer 1.5 lb

  • Blossom Booster 10-30-20 is a Professional formula designed to produce more flowers and brighter colors on all indoor and outdoor plants.
  • All indoor and outdoor flowering plants like: geraniums, impatiens, begonias and marigolds.
  • Feeds through both the roots and the leaves.
  • This is the Original Blossom Booster with the proven 1:3:2 nutrient.
  • Great for vegetables and fruit. Can also be used as a transplant solution.

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Amazon.com – Seller
eBay
Walmart
Garden Goods Direct

Product Details

Reviews From Real Customers

Tooney
smc48yo
thomacervasi0

8. Grow More – Water Soluble 20-20-20, 25 lbs

Grow More - Water Soluble 20-20-20, 25 lbs

  • General purpose water soluble fertilizer for plants grown in soil.
  • Can be used in both soil and foliar applications.
  • Multiple sources of Nitrogen for staggered release.
  • 1 pound in 100 gallons of water will supply approximately 237 ppm Nitrogen.
  • General Dosage: 1 tablespoon / gallon.

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Amazon.com – Seller
eBay
Grange Co-op
BVV

Product Details

Specifications

Details
Weight 25.75 oz

9. J R Peters 52008 Jacks Classic 20-20-20 All Purpose Fertilizer 8-Ounce

J R Peters 52008 Jacks Classic 20-20-20 All Purpose Fertilizer 8-Ounce

  • Free Measuring Spoon Enclosed For Easy And Precise Application
  • Features The Highest Safety Factor To Prevent Burning When Applied As Directed
  • Blended With An Enhanced Micronutrient Package Which Provides Optimal Nutrition For Strong Roots And Green Foliage
  • No Assembly Required

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eBay
Walmart
Garden Goods Direct

Product Details

Specifications

Details
Dimensions 8 × 6 × 6 in
Plant Use All Purpose
Size in Ounces 8 oz.

10. Pennington 100536574 Ultragreen Starter Fertilizer, 14 Pound

Pennington 100536574 Ultragreen Starter Fertilizer, 14 Pound

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Amazon.com
Shell Lumber and Hardware
The BuildClub
Life and Home

Product Details

Specifications

Details
Weight 14.25 oz

11. Pennington Ultragreen Lawn Fertilizer – 14 lb

Pennington Ultragreen Lawn Fertilizer - 14 lb

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Amazon.com
eBay
Walmart
Home Depot

Product Details

Specifications

Details
OMRI Certified No
Works Best On Lawns
Coverage Area 5000 sq ft
Application Conditions Established
Fertilizer Analysis (N-P-K) 30-0-4
Container Size 14 lb
Active Ingredients Nitrogen
Organic No
Iron Included Yes
Product Type Lawn Fertilizer
Suitable for Vegetables No
Phosphorus Free Yes
Product Form Granules
Lawn Project Greener Lawn
Water Soluble Yes
Size of Lawn Medium (4001 – 9999 sq ft)
Primary Usage All-Purpose
Safe for Bermuda Grass Yes
Application Method Spreader
Grass Type All Grasses
Region Multi-Region
Longevity (weeks) 12
Pre/Post Emergent Neither
Time Release Slow Release
Application Season Multi Season
Brand Name Pennington

12. Target 6 Plus MSMA – 2.5 Gallon

Target 6 Plus MSMA - 2.5 Gallon

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Amazon
Lawn and Pest Control Supply

Product Details

13. Espoma Organic Bio-Tone Starter Plus Plant Food, 8 lbs,

Espoma Organic Bio-Tone Starter Plus Plant Food, 8 lbs,

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Amazon
eBay
Walmart
Esbenshade’s Garden Center

Product Details

Specifications

Details
Brand Name Espoma
Container Size 8 lb
Fertilizer Analysis (N-P-K) 4-3-3
Season Use Multi-Season
Coverage Area 100 sq ft
Product Form Granules
Active Ingredient Endo & Ecto Mycorrhizae
Product Type Plant Food
Concentrated No
Plant Type Multi-Purpose
Time Release Slow-Release
Organic Yes

Reviews From Real Customers

meridame
cabatl68
Wil

14. Advanced Nutrients – Rhino Skin 1 L

Advanced Nutrients - Rhino Skin 1 L

  • Increases heat, diseases, and stress resistance.
  • Increases trichome structures and potency.
  • Strengthens plants allowing them to produce and support larger flowers.
  • Does not affect the pH level.

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Amazon
eBay
New England Hydroponics
Edenz Hydro and Gardening Superstore

Product Details

Specifications

Details
Length (in.) 4.5
Lead Time This product ships in 1-2 Business Days
N-P-K 0-0-0.4
Nutrient Application Hydroponic and Soil Nutrient
Nutrient Type Synthetic Based
OMRI Certified No
Nutrient Material Type Liquid

Reviews From Real Customers

se7enfootninja
ldrancer
eikdupre_0

15. Miracle Gro 4.5 lbs. Shake N Feed All Purpose Plant Food

Miracle Gro 4.5 lbs. Shake N Feed All Purpose Plant Food

  • Formulated with micro nutrients to help plants grow stronger and be more productive
  • Contains kelp, earthworm castings, feather meal, and bone meal
  • Can be used on indoor and outdoor plants
  • Ideal for all flowers, vegetables, trees, shrubs, and houseplants
  • Nourishes above and below the soil

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Amazon
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Home Depot
Miracle-Gro

Product Details

16. Espoma Organic Plant-tone Plant Food, 8 Lbs

Espoma Organic Plant-tone Plant Food, 8 Lbs

  • Complex blend of 100% natural & organic ingredients to provide complete and balanced feeding
  • Enhanced with Bio-tone beneficial microbes
  • Long-lasting, slow release
  • Will not burn or leach away

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Lowe’s
Home Depot

Product Details

Reviews From Real Customers

Grand

17. Miracle-Gro Shake ‘N Feed All Purpose Plant Food Plus Weed Preventer, 4.5 lbs

Miracle-Gro Shake 'N Feed All Purpose Plant Food Plus Weed Preventer, 4.5 lbs

  • One application feeds plants and prevents weeds for up to three months.
  • Easy use applicator.
  • Treats a minimum of 135 square feet.

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Amazon
Home Depot
Lowe’s
Miracle-Gro

Product Details

Specifications

Details
Brand Name Miracle-Gro
Fertilizer Analysis (N-P-K) 10-10-10
Concentrated No
Container Size 4.5 lb
Coverage Area 135 sq ft
Organic No
Product Type Weed Preventer plus Plant Food
Application Frequency 3 Months
Product Form Granules

18. Ammonium Sulfate – NH42SO4 – 1 Pound 1NH4SO4

Ammonium Sulfate - NH42SO4 - 1 Pound 1NH4SO4

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eBay – alphachem08
Walmart – Alpha Chemicals
Exit 15 Corporation

Product Details

19. Milorganite Nitrogen Fertilizer

Milorganite Nitrogen Fertilizer

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Amazon
Walmart
Solutions Pest & Lawn
Alsip Home & Nursery

Product Details

Specifications

Details
Weight 37 lb

20. Sunday Lawn Kickstart Fertilizer for Lawn Improvement (22-0-2)

Sunday Lawn Kickstart Fertilizer for Lawn Improvement (22-0-2)

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Lowe’s
Instacart

Product Details

Specifications

Details
For Use in Spring Yes
Safer For Kids Yes
Can Be Used On Edibles No
Maximum Coverage Area (Sq. Feet) 5000
Feed Duration Up to 8 weeks
Organic No
OMRI Listed No
Can Be Used on Bluegrass Yes
Winterizer No
Annual Program No
Mineral Supplement Yes
Phosphorus Content (Percentage) 0
Bag Capacity Quantity by Dry Volume 42.3
Can Be Used on Centipede Yes
Lowe’s Exclusive No
Natural Yes
Lawn Starter Yes
For Use In All Seasons No
Can Be Used on Zoysia Yes
Can Be Used on Bermuda Yes
Can Be Used on Ryegrass Yes
Waiting Period to Seed No waiting period
Bag Capacity Unit of Measure Fluid ounce(s)
Nitrogen (N) Content (Percentage) 22
For Use in Summer Yes
Moss Control No
For Use in Fall No
Crabgrass Preventer No
Can Be Used When Seeding Yes
Potassium (K) Content (Percentage) 2
Can Be Used on St. Augustine Yes
Time Release Fast release
All-Purpose No
For Use in Winter No
Safer For Pets Yes
Can Be Used on All Grass Types Yes
Can Be Used on Fescue Yes
Can Be Used on Bahia Yes

Conclusion

The best lawn fertilizer for St. Augustine grass is one that contains nitrogen, phosphorus, and potassium. It should also have a slow-release formula to provide nutrients to the grass over a longer period of time.

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