10 Best Milorganite Nitrogen Fertilizer of 2025

Tested and Reviewed: Top 10 Milorganite Nitrogen Fertilizer deals with expert ratings from 8.1 to a perfect 10

April 2026 Edition

Editor's Choice

9.7

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 32 lb Bag - for Lawns, Flowers, and Gardens - Includes Bonus Feeding & Spreader Tips Brochure

Editor's bottom line:

“This milorganite nitrogen fertilizer is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Bonus brochure includes seasonal application timing, spreader settings, and tips for lawns, gardens, and trees.
You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 2,500 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

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Picked by 397 people today

9.5

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 32 Pound Bag - for Lawns, Flowers, and Gardens

Main Highlights

You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 2,500 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

Show Price

9.5

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 5 Pound Bag - for Lawns, Flowers and Gardens

Main Highlights

You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 390 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

Show Price

9.2

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 32 Pound Bag - for Lawns, Flowers, and Gardens

Main Highlights

You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 2,500 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

Show Price

9.0

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 32 Pound Bag (Pack of 4) - for Lawns, Flowers, Gardens

Main Highlights

You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 2,500 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

Show Price

8.8

Save 6%

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 5 Pound Bag (Pack of 2) - for Lawns, Flowers and Gardens

6% Off

Main Highlights

You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 390 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

Show Price

8.6

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 5 Pound Bag (Pack of 4) - for Lawns, Flowers and Gardens

Main Highlights

You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 390 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

Show Price

Best Value

8.3

Save 11%

Scotts

Scotts Green Max Lawn Food - Lawn Fertilizer for Grass Plus Iron Supplement, 5,000 sq. ft., 16.67 lbs.

11% Off

Main Highlights

DUAL-ACTION FORMULA: Scotts Green Max Lawn Food is a 2-in-1 grass fertilizer plus iron supplement that feeds your lawn and provides deep greening in just 3 days
QUICK, GREEN RESULTS: This lawn care product contains 5% iron, a micronutrient that enhances the greening process for fast results
APPLICATION: Apply this fertilizer plus iron supplement for green grass to any grass type in the spring, summer, or fall
NO STAINING: Guaranteed not to stain concrete, driveways, or other surfaces surrounding your lawn (when used as directed)
PEOPLE & PETS DON'T NEED TO WAIT: OK to re-enter lawn immediately after product is applied
COVERAGE: One 16.67 lb. bag of Scotts Green Max Lawn Food for greener grass covers 5,000 sq. ft.

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8.1

Save 6%

Scotts

Scotts Turf Builder Lawn Food - Fertilizer for Grass, For All Grass Types, 5,000 sq. ft., 12.5 lb.

6% Off

Main Highlights

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.

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8.1

Scotts

Scotts Green Max Lawn Food - Lawn Fertilizer for Grass Plus Iron Supplement, 10,000 sq. ft., 33.33 lbs.

Main Highlights

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 33.33 lb. bag of Scotts Green Max Lawn Food covers 10,000 sq. ft.

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Our Best Overall Choice

Best Choice

9.7

Milorganite

Milorganite All-Purpose Eco-Friendly Slow-Release Nitrogen 6-4-0 Fertilizer, 32 lb Bag - for Lawns, Flowers, and Gardens - Includes Bonus Feeding & Spreader Tips Brochure

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Bonus brochure includes seasonal application timing, spreader settings, and tips for lawns, gardens, and trees.
You dont have to worry about streaks, stripes, or accidentally burning your lawn when you use Milorganite fertilizer!
Milorganite contains virtually no salts, so it wont burn your lawn, trees, shrubs, or plants, even in the hottest temperatures or driest conditions.
Milorganite's iron greens without staining. Grass needs iron for the long-lasting, deep, vibrant green lawn you want. Milorganite delivers organically complex iron throughout the feeding period and wont stain concrete, unlike iron salts in some synthetic fertilizers.
Milorganites slow-release plant food formula provides nitrogen and other nutrients for up to 8-10 weeks after application and does not need to be watered in. Covers 2,500 Sq. Ft.
Milorganite can be safely used in lawns, flowers, shrubs, trees, and fruit and vegetable gardens, promoting strong roots and sturdier stems. It provides the nutrients every garden needs to grow the biggest and greatest abundance.

Show Price

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