20 Best Slow Release Fertilizer For Lawns (2022 Updated)

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Slow release fertilizer for lawns is fertilizer that is slowly released over time. This type of fertilizer is ideal for lawns because it provides a steady supply of nutrients, which helps lawns stay healthy and green.

20 Best Slow Release Fertilizer For Lawns

Product Image Product Name Features Price

Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb

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

Milorganite 32 lb. Slow-Release Nitrogen Fertilizer

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

The Andersons Professional 24-0-11 2% Iron Deep Green Fertilizer with NS-54 Nitrogen 40 lb Bag 10,000 Sq ft

  • The Andersons Deep Green Fertilizer 24-0-11 is a professional-grade lawn fertilizer that will deliver nutrients and a deep green color to your lawn

Miracle Gro Lawn Food – 5 lbs

  • Instantly feeds all grass types.
  • Encourages a soft green carpet of grass that will be the pride of the neighborhood.
  • Feeds up to 7,200 sq. ft.

Scotts Turf Builder Starter Fertilizer

  • Grows new grass thicker and quicker
  • Accelerates root growth of new grass plants and existing lawn
  • Improves lawn’s ability to absorb water & nutrients

Scotts Turf Builder Lawn Fertilizer – 12.5 lb bag

  • Feeds and strengthens to help protect against future problems
  • Builds strong, deep roots
  • Improves lawn’s ability to absorb water and nutrients versus an unfed lawn

Maximum Green & Growth- High Nitrogen 28-0-0 Npk- Lawn Food Quality Liquid Fertilizer

  • 28-0-0 Liquid Lawn Food Nutritional Supplement: High Nitrogen Formula. Use to stimulate Green & Growth or to treat nutrient deficiency.

Ironite 30 lb. 1-0-1 Lawn Fertilizer

  • For Use On Lawns, Flowers
  • This product is made in United States
  • Helps Grass Use Nutrients Found Naturally In The Soil

Green-Up 12345 Weed and Feed Lawn Fertilizer

  • 15 m

Jonathan Green 11988 Green-Up Lawn Fertilizer

  • 5 m

Scotts Step 4 Lawn Fertilizer

  • Covers 5,000 sq.ft
  • Apply in fall: August-September-October-November
  • Water Smart product

Ambrands 4416731 5M Weed & Feed Southern Lawn Fert

  • Country of Origin: United States
  • Weight: 12.75 lbs

Vigoro 14 lbs. 5,000 Sq. ft. Lawn Fertilizer for All Grass Types

  • 14 lbs. 5,000 Sq. Ft

Ace All-Purpose Lawn Fertilizer for All Grasses 5000 Sq ft

  • 5000 sq ft
Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb
  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time
Milorganite 32 lb. Slow-Release Nitrogen Fertilizer
  • Eco-friendly
  • Slow Release, feeds up to 3 months
  • Aids in root development
The Andersons Professional 24-0-11 2% Iron Deep Green Fertilizer with NS-54 Nitrogen 40 lb Bag 10,000 Sq ft
  • The Andersons Deep Green Fertilizer 24-0-11 is a professional-grade lawn fertilizer that will deliver nutrients and a deep green color to your lawn
Miracle Gro Lawn Food – 5 lbs
  • Instantly feeds all grass types.
  • Encourages a soft green carpet of grass that will be the pride of the neighborhood.
  • Feeds up to 7,200 sq. ft.
Scotts Turf Builder Starter Fertilizer
  • Grows new grass thicker and quicker
  • Accelerates root growth of new grass plants and existing lawn
  • Improves lawn’s ability to absorb water & nutrients
Scotts Turf Builder Lawn Fertilizer – 12.5 lb bag
  • Feeds and strengthens to help protect against future problems
  • Builds strong, deep roots
  • Improves lawn’s ability to absorb water and nutrients versus an unfed lawn
Maximum Green & Growth- High Nitrogen 28-0-0 Npk- Lawn Food Quality Liquid Fertilizer
  • 28-0-0 Liquid Lawn Food Nutritional Supplement: High Nitrogen Formula. Use to stimulate Green & Growth or to treat nutrient deficiency.
Ironite 30 lb. 1-0-1 Lawn Fertilizer
  • For Use On Lawns, Flowers
  • This product is made in United States
  • Helps Grass Use Nutrients Found Naturally In The Soil
Green-Up 12345 Weed and Feed Lawn Fertilizer
  • 15 m
Jonathan Green 11988 Green-Up Lawn Fertilizer
  • 5 m
Scotts Step 4 Lawn Fertilizer
  • Covers 5,000 sq.ft
  • Apply in fall: August-September-October-November
  • Water Smart product
Ambrands 4416731 5M Weed & Feed Southern Lawn Fert
  • Country of Origin: United States
  • Weight: 12.75 lbs
Vigoro 14 lbs. 5,000 Sq. ft. Lawn Fertilizer for All Grass Types
  • 14 lbs. 5,000 Sq. Ft
Ace All-Purpose Lawn Fertilizer for All Grasses 5000 Sq ft
  • 5000 sq ft

1. 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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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

Reviews From Real Customers

Mulcher
pearlsport
Dr Charlotte

2. 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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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

3. The Andersons Professional 24-0-11 2% Iron Deep Green Fertilizer with NS-54 Nitrogen 40 lb Bag 10,000 Sq ft

The Andersons Professional 24-0-11 2% Iron Deep Green Fertilizer with NS-54 Nitrogen 40 lb Bag 10,000 Sq ft

  • The Andersons Deep Green Fertilizer 24-0-11 is a professional-grade lawn fertilizer that will deliver nutrients and a deep green color to your lawn
  • Contains slow release nitrogen for uniform growth and extended feeding
  • Contains 2% iron and manganese
  • Safe for use on all turf types during the growing season
  • Made in the USA

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Product Details

Specifications

Details
Item Form Granules

Reviews From Real Customers

Justin L.
Noel S.
Ajay K.

4. Miracle Gro Lawn Food – 5 lbs

Miracle Gro Lawn Food - 5 lbs

  • Instantly feeds all grass types.
  • Encourages a soft green carpet of grass that will be the pride of the neighborhood.
  • Feeds up to 7,200 sq. ft.
  • The fast way to a thick, green lawn.
  • For use with the Miracle-Gro Garden Feeder.

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Ace Hardware

Product Details

Specifications

Details
OMRI Certified No
Fertilizer Analysis (N-P-K) 36-0-6
Coverage Area 7200 sq ft
Suitable for Vegetables No
Application Season All Season
Product Form Powder
Water Soluble Yes
Phosphorus Free Yes
Brand Name Miracle-Gro
Container Size 5 lb
Size of Lawn Medium (4001 – 9999 sq ft)
Primary Usage All-Purpose
Product Type Lawn Fertilizer
Grass Type All Grasses
Safe for Bermuda Grass Yes
Application Conditions Established
Lawn Project Feed Your Lawn
Iron Included No
Region Multi-Region
Pre/Post Emergent Neither
Organic No

Reviews From Real Customers

TallPaul

5. Scotts Turf Builder Starter Fertilizer

Scotts Turf Builder Starter Fertilizer

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Tractor Supply Company
Shell Lumber and Hardware

Product Details

Specifications

Details
Bag Capacity Unit of Measure Pound(s)
Can Be Used on Zoysia Yes
Waiting Period to Seed No waiting period
Feed Duration Up to 2 months
Primary Usage Lawn starter
Safer For Pets No
Can Be Used When Seeding Yes
Can Be Used on All Grass Types Yes
Safer For Kids No
Weed Control No
Can Be Used on St. Augustine Yes
For Use in Winter Yes
Organic No
Can Be Used on Centipede Yes
Bag Capacity Quantity by Dry Volume 42.0
Potassium (K) Content (Percentage) 4.0
Phosphorus Content (Percentage) 25.0
OMRI Listed No
Moss Control No
Annual Program No
Winterizer No
Lawn Starter Yes
Can Be Used on Ryegrass Yes
For Use in Summer Yes
Natural No
Can Be Used on Bermuda Yes
Time Release Slow release
Can Be Used on Bahia Yes
Iron Included No
Insect Control No
Nitrogen (N) Content (Percentage) 24.0
For Use in Fall Yes
Lowe’s Exclusive No
Can Be Used on Fescue Yes
For Use in Spring Yes
Can Be Used on Bluegrass Yes
For Use In All Seasons Yes
Crabgrass Preventer No
Can Be Used On Edibles No
Mineral Supplement No
All-Purpose Yes

Reviews From Real Customers

Chirag
LawnNewbie
SteffyWeffy

6. Pennington Ultragreen Lawn Fertilizer – 14 lb

Pennington Ultragreen Lawn Fertilizer - 14 lb

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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

7. Lesco 052405 Professional Starter Turf Fertilizer, 18-24-12, 50 lbs

Lesco 052405 Professional Starter Turf Fertilizer, 18-24-12, 50 lbs

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Sears

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Reviews From Real Customers

Phillip S.
Gray M.

8. Milorganite 32 lbs Milorganite Slow-Release Nitrogen Fertilizer

Milorganite 32 lbs Milorganite Slow-Release Nitrogen Fertilizer

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Dufus
GrBe

9. Milorganite Nitrogen Fertilizer

Milorganite Nitrogen Fertilizer

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Solutions Pest & Lawn
Alsip Home & Nursery

Product Details

Specifications

Details
Weight 37 lb

10. Scotts Turf Builder Lawn Fertilizer – 12.5 lb bag

Scotts Turf Builder Lawn Fertilizer - 12.5 lb bag

  • Feeds and strengthens to help protect against future problems
  • Builds strong, deep roots
  • Improves lawn’s ability to absorb water and nutrients versus an unfed lawn
  • Formulated with Scotts exclusive All-in-One Particle technology for even greening and feeding
  • Apply to any grass type

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Scotts Direct
Home Depot

Product Details

Specifications

Details
Moss Control No
Primary Usage All-purpose lawn fertilizer
Nitrogen (N) Content (Percentage) 32
Mineral Supplement No
OMRI Listed No
Potassium (K) Content (Percentage) 4
Phosphorus Content (Percentage) 0
Bag Capacity Quantity by Dry Volume 12.5
Insect Control No
Can Be Used When Seeding Yes
Bag Capacity Unit of Measure Pound(s)
Can Be Used on Zoysia Yes
Lowe’s Exclusive No
Iron Included Yes
All-Purpose Yes
Maximum Coverage Area (Sq. Feet) 5000
Can Be Used on Fescue Yes
For Use in Spring Yes
Organic No
Waiting Period to Seed No waiting period
Can Be Used on Bluegrass Yes
Feed Duration Up to 2 months
Crabgrass Preventer No
Winterizer No
Can Be Used on Centipede Yes
For Use in Winter No
Lawn Starter No
Weed Control No
Can Be Used on Bahia Yes
Can Be Used On Edibles No
Can Be Used on Ryegrass Yes
For Use in Summer Yes
Natural No
Safer For Kids No
Annual Program No
Can Be Used on Bermuda Yes
For Use in Fall Yes
Can Be Used on St. Augustine Yes
Safer For Pets No
Can Be Used on All Grass Types Yes
For Use In All Seasons No

Reviews From Real Customers

Jaymegj13
Dr Z
AJW80

11. Maximum Green & Growth- High Nitrogen 28-0-0 Npk- Lawn Food Quality Liquid Fertilizer

Maximum Green & Growth- High Nitrogen 28-0-0 Npk- Lawn Food Quality Liquid Fertilizer

  • 28-0-0 Liquid Lawn Food Nutritional Supplement: High Nitrogen Formula. Use to stimulate Green & Growth or to treat nutrient deficiency.
  • Contains High Quality Feed Grade Compounds: Nourish your lawn to health with liquid nutrients. Designed to be quickly & easily applied.
  • All Grass types: Including Bermuda, St. Augustine, Zoysia, Buffalo, Centipede, Florida Palmetto, Bahia, Fescue, Ryegrass & Kentucky Bluegrass.

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Simple Lawn Solutions

Product Details

Specifications

Details
Is Discontinued By Manufacturer No
Package Dimensions 8.98 x 5.31 x 3.35 inches; 2.89 Pounds

Reviews From Real Customers

Awilda
five0bwan
lrodrig0325

12. Ironite 30 lb. 1-0-1 Lawn Fertilizer

Ironite 30 lb. 1-0-1 Lawn Fertilizer

  • For Use On Lawns, Flowers
  • This product is made in United States
  • Helps Grass Use Nutrients Found Naturally In The Soil

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Details
Package Quantity 1

13. Safer Lawn Restore Lawn Fertilizer 20 lb.

Safer Lawn Restore Lawn Fertilizer 20 lb.

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Ace Hardware
Esbenshade’s Garden Center

Product Details

Specifications

Details
Region Multi-Region
Product Form Granules
Fertilizer Analysis (N-P-K) 9-0-2
Coverage Area 5000 sq ft
Application Season All Season

14. Green-Up 12345 Weed and Feed Lawn Fertilizer

Green-Up 12345 Weed and Feed Lawn Fertilizer

  • 15 m

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Esbenshade’s Garden Center

Product Details

Specifications

Details
Grass Type All Grasses
Application Season Multi Season
Primary Usage Weed & Feed
Pre/Post Emergent Post Emergent
Each Weight 46.000 LB

Reviews From Real Customers

Greengrass

15. Jonathan Green 11988 Green-Up Lawn Fertilizer

Jonathan Green 11988 Green-Up Lawn Fertilizer

  • 5 m

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Central Sod

Product Details

Specifications

Details
Primary Usage All-Purpose
Grass Type All Grasses
Coverage Area 5000 sq ft
Water Soluble No
Application Season Spring

Reviews From Real Customers

Tom C
OcramIAM

16. Milorganite 64032 Eco-friendly Slow-Release Nitrogen Lawn Fertilizer, 32-lbs. – Quantity 20

Milorganite 64032 Eco-friendly Slow-Release Nitrogen Lawn Fertilizer, 32-lbs. - Quantity 20

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Product Details

17. Scotts Step 4 Lawn Fertilizer

Scotts Step 4 Lawn Fertilizer

  • Covers 5,000 sq.ft
  • Apply in fall: August-September-October-November
  • Water Smart product

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Ace Hardware
Esbenshade’s Garden Center

Product Details

Specifications

Details
Primary Usage Weed & Feed
Grass Type All Grasses
Coverage Area 5000 sq ft
Water Soluble No
Application Season Fall

Reviews From Real Customers

Devhog
JustDad
SCchelmsford

18. Ambrands 4416731 5M Weed & Feed Southern Lawn Fert

Ambrands 4416731 5M Weed & Feed Southern Lawn Fert

  • Country of Origin: United States
  • Weight: 12.75 lbs

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SupremeDIY.com

Product Details

Specifications

Details
Coverage Area (sq. ft.) 5000
Dry Fertilizer Type Dry Lawn Fertilizer
Time release Slow release
Extended Control Extended Control
Area of Use Lawn

Reviews From Real Customers

pennington.com

19. Vigoro 14 lbs. 5,000 Sq. ft. Lawn Fertilizer for All Grass Types

Vigoro 14 lbs. 5,000 Sq. ft. Lawn Fertilizer for All Grass Types

  • 14 lbs. 5,000 Sq. Ft

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Home Depot
The BuildClub

Product Details

Specifications

Details
NPK Ratio 29-0-4
Season Use All-Season
Emergent Type Neither Pre nor Post Emergent
Active Ingredients Nitrogen
Dry Fertilizer Type Dry Lawn Fertilizer

Reviews From Real Customers

lab2022
Bunnylove77
Pdye107

20. Ace All-Purpose Lawn Fertilizer for All Grasses 5000 Sq ft

Ace All-Purpose Lawn Fertilizer for All Grasses 5000 Sq ft

  • 5000 sq ft

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Factory Hardware Store
Dinuba Lumber Co

Product Details

Specifications

Details
Fertilizer Analysis (NPK) 29-0-4
Primary Usage All-Purpose
Grass Type All Grasses
Coverage Area 5000 sq ft
Water Soluble No

Reviews From Real Customers

CaScotsman
Ace Hardware

Best Slow Release Fertilizer For Lawns Buying Guides

What are the benefits of using slow release fertilizer on your lawn?

There are many benefits to using slow release fertilizer on your lawn. Some of these benefits include:

1. Slow release fertilizer provides a steadier supply of nutrients to your lawn over a longer period of time, which helps to promote healthier growth.

2. Slow release fertilizer is less likely to burn your lawn than other types of fertilizer, so it is safer to use.

3. Slow release fertilizer can help to reduce the amount of thatch in your lawn by slowly releasing nutrients that encourage the breakdown of thatch.

4. Slow release fertilizer can help to improve the overall health of your lawn by providing a slow and steady supply of nutrients.

5. Slow release fertilizer can be a more cost-effective option than other types of fertilizer, since you don’t have to reapply as often.

What are some of the best slow release fertilizers on the market?

Some of the best slow release fertilizers for lawns on the market are:

-Scotts Turf Builder Lawn Food

-Miracle-Gro Shake ‘n Feed All Purpose Plant Food

-Osmocote Plus Outdoor and Indoor Plant Food

-Espoma Organic All Season Lawn Food

-Nature’s Care Organic & Natural Lawn Food

How do you apply slow release fertilizer to your lawn?

Slow release fertilizer can be applied to your lawn by following these simple steps:

1. Mow your lawn short, then rake up any debris.

2. Apply the fertilizer evenly over the entire lawn.

3. Water the lawn deeply to help the fertilizer soak in.

4. Wait a few days, then mow the lawn again.

What are some tips for using slow release fertilizer effectively?

Some tips for using slow release fertilizer effectively on lawns include:

-Choose a fertilizer with the right nutrient ratio for your lawn.

-Apply the fertilizer at the recommended rate.

-Water the fertilizer in well after application.

-Mow the lawn regularly to help the fertilizer work its way down to the roots.

How often should you apply slow release fertilizer to your lawn?

It is best to apply fertilizer to your lawn two to four times per year.

What are some things to consider when using slow release fertilizer?

Some things to consider when using fertilizer of slow release fertilizer for lawns include:

-The application rate of slow release fertilizer should be based on the manufacturer’s recommendation and the nitrogen content.

-The type of slow release fertilizer you choose should be based on the turfgrass species you are fertilizing (e.g. fescue, bluegrass, etc.), your soil type, and the time of year.

-Slow release fertilizer should be applied to dry soil and should not be watered in until after application.

-Be sure to follow the manufacturer’s instructions when applying slow release fertilizer to your lawn.

What are some common mistakes people make when using slow release fertilizer?

Some common mistakes people make when using fertilizer of slow release fertilizer for lawns include over-fertilizing, which can lead to lawn burn, and under-fertilizing, which can cause lawns to be unhealthy and yellow.

Applying fertilizer too early or too late in the season is also a common mistake.

Conclusion

The conclusion of slow release fertilizer for lawns is that it is an effective way to provide nutrients to your lawn over a long period of time. This type of fertilizer is ideal for use in areas where you do not want to have to reapply fertilizer frequently, such as on large lawns or in areas where the soil is not particularly fertile.

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