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20 Best Fertilizer For Colorado Lawns (2023 Updated)

There are many different types of fertilizer that can be used for Colorado lawns, but the best type of fertilizer to use depends on the type of grass that is being grown. For example, if you are growing Kentucky bluegrass, the best type of fertilizer to use would be a nitrogen-based fertilizer.

However, if you are growing a different type of grass, such as fescue, the best type of fertilizer to use would be a phosphorus-based fertilizer.

20 Best Fertilizer For Colorado 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

Safer Brand Lawn Restore Fertilizer 20 lb

  • Revitalizes lawn to a thick turf by strengthening root systems
  • Covers up to 5,000 sq ft and Lawn start to green up within 3 to 5 days

Instead Happy Lawn Natural Fall Fertilizer 25.46 lb, Multicolor

  • instead Happy Lawn Fall fertilizer is formulated to green, thicken, and strengthen your lawn to prepare it for the chilly winter months.

Scotts Lawn Food, Turf Builder – 37.5 lb

  • 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

Ferti-lome 10767 20 lbs. Centipede Lawn Fertilizer

  • Contains slow release nitrogen for long lasting results plus high iron content along with other trace.
  • Dimension – 3 l x 14 w x 22 h in.

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.

Milorganite 32 lb. Slow-Release Nitrogen Fertilizer

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

Scotts Turf Builder Lawn Food with Moss Control Fertilizer

  • Kills moss and thickens grass to fill in bare spots
  • Kills moss, not lawns
  • Feeds to help prevent future moss problems

Greenview 16.5 lbs. Fairway Formula Lawn Fertilizer

  • 16.5 lbs

Scotts 49021 Turf Builder Summer Lawn Food

  • Highly effective Summer feeding product loaded with Scotts slow release fertilizer and the new Every Drop water maximizing technology

Scotts Turf Builder Lawn Food – WinterGuard

  • 5m

Greenview Fairway Formula 22.5 lbs. 7500 Sq. ft. Fall Lawn Fertilizer (30-0-12)

  • 22.5 Pound

Howard Johnsons 7133 All Purpose Fertilizer, 16-16-16 – 20 lb bag

  • Howard Johnson All purpose fertilizer 16-16-16 20lb for lawns, flowers, trees, shrubs, and vegetable gardens
  • Fast acting 100 percent organic formulas to meet all gardening needs

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

  • 14 lbs. 5,000 Sq. Ft

Greenview 48 lbs. Lawn Food

  • Restores nutrients to the soil
  • Speeds root growth to improve nutrient absorption and helps lawns retain water to protect against drought

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
Milorganite Slow-Release Nitrogen Lawn Fertilizer, 32 Lb
  • Organic composition
  • Reduces the need for watering
  • Cuts down mowing time
Safer Brand Lawn Restore Fertilizer 20 lb
  • Revitalizes lawn to a thick turf by strengthening root systems
  • Covers up to 5,000 sq ft and Lawn start to green up within 3 to 5 days
Instead Happy Lawn Natural Fall Fertilizer 25.46 lb, Multicolor
  • instead Happy Lawn Fall fertilizer is formulated to green, thicken, and strengthen your lawn to prepare it for the chilly winter months.
Scotts Lawn Food, Turf Builder – 37.5 lb
  • 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
Ferti-lome 10767 20 lbs. Centipede Lawn Fertilizer
  • Contains slow release nitrogen for long lasting results plus high iron content along with other trace.
  • Dimension – 3 l x 14 w x 22 h in.
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.
Milorganite 32 lb. Slow-Release Nitrogen Fertilizer
  • Eco-friendly
  • Slow Release, feeds up to 3 months
  • Aids in root development
Scotts Turf Builder Lawn Food with Moss Control Fertilizer
  • Kills moss and thickens grass to fill in bare spots
  • Kills moss, not lawns
  • Feeds to help prevent future moss problems
Greenview 16.5 lbs. Fairway Formula Lawn Fertilizer
  • 16.5 lbs
Scotts 49021 Turf Builder Summer Lawn Food
  • Highly effective Summer feeding product loaded with Scotts slow release fertilizer and the new Every Drop water maximizing technology
Scotts Turf Builder Lawn Food – WinterGuard
  • 5m
Greenview Fairway Formula 22.5 lbs. 7500 Sq. ft. Fall Lawn Fertilizer (30-0-12)
  • 22.5 Pound
Howard Johnsons 7133 All Purpose Fertilizer, 16-16-16 – 20 lb bag
  • Howard Johnson All purpose fertilizer 16-16-16 20lb for lawns, flowers, trees, shrubs, and vegetable gardens
  • Fast acting 100 percent organic formulas to meet all gardening needs
Vigoro 14 lbs. 5,000 Sq. ft. Lawn Fertilizer for All Grass Types
  • 14 lbs. 5,000 Sq. Ft
Greenview 48 lbs. Lawn Food
  • Restores nutrients to the soil
  • Speeds root growth to improve nutrient absorption and helps lawns retain water to protect against drought
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

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

2. Safer Brand Lawn Restore Fertilizer 20 lb

Safer Brand Lawn Restore Fertilizer 20 lb

  • Revitalizes lawn to a thick turf by strengthening root systems
  • Covers up to 5,000 sq ft and Lawn start to green up within 3 to 5 days
  • Non-burning formula promotes soil vitality for a thicker, healthier lawn
  • Provides effective year-round care by helping plants withstand heat, cold and drought stresses
  • Safe for children and pets when used as directed

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Specifications

Details
Product Dimensions 15.38 x 12.63 x 7 inches
Country of Origin USA

3. Instead Happy Lawn Natural Fall Fertilizer 25.46 lb, Multicolor

Instead Happy Lawn Natural Fall Fertilizer 25.46 lb, Multicolor

  • instead Happy Lawn Fall fertilizer is formulated to green, thicken, and strengthen your lawn to prepare it for the chilly winter months.
  • Made with natural ingredients, such as alfalfa meal and molasses.
  • Safe for all grass types.
  • Safe to use around every member of the family – including pets – when used as directed.
  • For best results, apply instead Happy Lawn Fall fertilizer using an instead Go Getter Spreader; one bag covers 4,000 sq. ft.

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Specifications

Details
For Use In All Seasons No
OMRI Listed No
Can Be Used on Bahia Yes
Can Be Used on St. Augustine Yes
Can Be Used When Seeding Yes

4. Scotts Lawn Food, Turf Builder – 37.5 lb

Scotts Lawn Food, Turf Builder - 37.5 lb

  • 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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Specifications

Details
Units in Package 1
Unit Size 37.5 lb
Directions Directions for Use: Quick Start Guide: You’re just three simple steps away from a beautiful Scotts lawn! Fill & Set Spreader: Scotts Broadcast/Rotary Spreaders: 3-1/2. Scotts Drop Spreaders: 6-1/2. Scotts products are designed to work with Scotts spreaders. This package applies 2.5 lb of product per 1,000 sq ft. Apply: For even application walk at a steady pace slightly overlapping each pass. Scotts Drop Spreaders: Align hopper arrow with previous wheel track. Scotts Broadcast/Rotary Spreaders: Line up each pass approximately 5 ft from wheel track. For fast results, lightly water in. Product does not require watering in. Clean-Up: Return unused product to original container. Help keep our water clean. Apply only to actively growing turf. Do not apply if heavy rain is expected. Apply this product only to your lawn and sweep any product that lands on the driveway, sidewalk, or street back onto your lawn. Enjoy: Lawn is safe to re-enter immediately after product is applied. Questions? Call 1-800-543-Turf (8873). www.scotts.com. Tips for Lawn Care Success: Feed regularly. Mow and leave the grass clippings on your lawn. Mowing high allows the grass to develop a deep root system & helps your lawn use water more effectively. Grass clippings recycle the plant nutrients back into the soil. Conserve Water: Well-fed lawns are more efficient at using available water. Feeding with Scotts products helps grow a thick lawn with more roots to better absorb water and nutrients than and unfed lawn. This helps protect your lawn against heat, drought and other stresses. Remember, your lawn will begin to wilt when water is needed. As much as possible take advantage of nature’s sprinkler and rely on the rain to water your lawn. Scotts Recommended Feeding Routine: Plan your feeding routine with Scotts Turf Builder Lawn Food. Early Spring: An early spring feeding helps grass green-up after the winter. You should feed around the first time you mow your grass. Late Spring: Feeding now prepares grass for summer stress by thickening the blades on top and building deep roots below. Early Fall: An early fall feeding replenishes the nutrients lost in the harsh summer months for quicker recovery. You should feed when your grass comes out of dormancy. Late Fall: Late fall is the best feeding time because it builds strong deep roots and prepares grass for winter. You should feed when all the leaves have fallen. Florida Applications: 4 annual feedings with the following exceptions: On centipedegrass do not exceed 2 feedings in the north and 3 feedings in central and south. On bahiagrass and zoysiagrass do not exceed 3 feedings in the north.
Warnings First Aid and Storage Information: Keep out of reach of children. Caution: Eye contact with contents may cause irritation. Flush eyes with water as soon as possible after contact. Storage: Store in original container, out of reach of children.

5. Ferti-lome 10767 20 lbs. Centipede Lawn Fertilizer

Ferti-lome 10767 20 lbs. Centipede Lawn Fertilizer

  • Contains slow release nitrogen for long lasting results plus high iron content along with other trace.
  • Dimension – 3 l x 14 w x 22 h in.
  • Item weight -9.1kg.
  • Package Quantity: 1.

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Product Details

Specifications

Details
Organic No
Fertilizer Analysis (NPK) 15-0-15
Grass Type Augustine, Zoysia, Zoysia
Container Size 20
Product Form Granules
Water Soluble No
Application Season Spring, Spring
Coverage Area 5000 sq. ft.
Suitable for Vegetables No
Assembled Product Weight 0 oz

6. 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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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

7. Pennington Ultragreen Lawn Fertilizer – 14 lb

Pennington Ultragreen Lawn Fertilizer - 14 lb

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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

8. Pennington 100536574 Ultragreen Starter Fertilizer, 14 Pound

Pennington 100536574 Ultragreen Starter Fertilizer, 14 Pound

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Details
Weight 14.25 oz

9. 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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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

10. Scotts Turf Builder Lawn Food with Moss Control Fertilizer

Scotts Turf Builder Lawn Food with Moss Control Fertilizer

  • Kills moss and thickens grass to fill in bare spots
  • Kills moss, not lawns
  • Feeds to help prevent future moss problems
  • Improves lawn’s ability to absorb water and nutrients versus an unfed lawn

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Specifications

Details
Nitrogen (N) Content (Percentage) 23
Bag Capacity Quantity by Dry Volume 50
Potassium (K) Content (Percentage) 3
Crabgrass Preventer No
Mineral Supplement No

11. Greenview 16.5 lbs. Fairway Formula Lawn Fertilizer

Greenview 16.5 lbs. Fairway Formula Lawn Fertilizer

  • 16.5 lbs

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Product Details

Specifications

Details
Product Length 20 in
Warranty Money Back Guarantee
Application Method Lawn Spreader
Application/Use Established lawns
Area of Use Use in the lawn

12. Scotts 49021 Turf Builder Summer Lawn Food

Scotts 49021 Turf Builder Summer Lawn Food

  • Highly effective Summer feeding product loaded with Scotts slow release fertilizer and the new Every Drop water maximizing technology
  • Specifically built to help grass stand up to the stress of summer
  • Greener grass with up to 50% less water
  • Florida compliant formula

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Product Details

Specifications

Details
Safe for Bermuda Grass Yes
Iron Included No
Lawn Project Feed Your Lawn
Pre/Post Emergent Neither
Fertilizer Analysis (N-P-K) 34-0-0

Reviews From Real Customers

Richard305
Lon7
Marv in Florida

13. Scotts Turf Builder Lawn Food – WinterGuard

Scotts Turf Builder Lawn Food - WinterGuard

  • 5m

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Specifications

Details
Bag Capacity Quantity by Dry Volume 12.5
For Use in Fall Yes
Can Be Used on Bermuda Yes
Bag Capacity Unit of Measure Pound(s)
Can Be Used on Ryegrass Yes

14. Greenview Fairway Formula 22.5 lbs. 7500 Sq. ft. Fall Lawn Fertilizer (30-0-12)

Greenview Fairway Formula 22.5 lbs. 7500 Sq. ft. Fall Lawn Fertilizer (30-0-12)

  • 22.5 Pound

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Specifications

Details
All-Purpose No
Winterizer Yes
Can Be Used on St. Augustine Yes
Maximum Coverage Area (Sq. Feet) 7500
OMRI Listed No

15. Howard Johnsons 7133 All Purpose Fertilizer, 16-16-16 – 20 lb bag

Howard Johnsons 7133 All Purpose Fertilizer, 16-16-16 - 20 lb bag

  • Howard Johnson All purpose fertilizer 16-16-16 20lb for lawns, flowers, trees, shrubs, and vegetable gardens
  • Fast acting 100 percent organic formulas to meet all gardening needs
  • This product is made in United States

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16. 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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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

17. Greenview 48 lbs. Lawn Food

Greenview 48 lbs. Lawn Food

  • Restores nutrients to the soil
  • Speeds root growth to improve nutrient absorption and helps lawns retain water to protect against drought
  • Features both immediate release and time-released nitrogen provides continuous feeding for up to 8-weeks
  • Can be applied anytime the turf is actively growing
  • 000 sq Ft”GreenView Yard Wide Guarantee

Product Details

18. 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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Package Quantity 1

19. Scotts Green Max Lawn Food – 46.67 lb.

Scotts Green Max Lawn Food - 46.67 lb.

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Details
Assembled Product Weight 48.4900 lb
Assembled Product Dimensions (L x W x H) 16.00 x 6.00 x 24.00 Inches

20. Greenview Lawn Food with Greensmart 22-0-4

Greenview Lawn Food with Greensmart 22-0-4

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Conclusion

Fertilizer is an important part of maintaining a healthy lawn in Colorado. The type of fertilizer you use will depend on the type of grass you have, the time of year, and the condition of your lawn. A professional lawn care company can help you determine the best fertilizer for your lawn.

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