16 Best Slow Release Lawn Fertilizers for Lush Lawns

Discover the best slow release lawn fertilizer to achieve lush, green grass effortlessly. Transform your yard with top picks designed for lasting results.
BrandMy RatingPrice
Milorganite
High-Quality Low-Cost Pick
9.2/10
Scotts
Best for Quick Greening
9.0/10
Milorganite
High-Quality Low-Cost Pick
9.2/10
Eco Solutions
Best for Long-Lasting Nourishment
8.8/10
The Andersons
9.2/10

Best Slow Release Lawn Fertilizer

Transforming your lawn into a lush, green paradise doesn't have to be a complex journey. In a world teeming with options, finding the best slow release lawn fertilizer can feel like searching for hidden treasures in your backyard. Dive into our carefully curated guide, where we unveil top choices that nourish your grass while ensuring effortless growth and vitality.

High-Quality Low-Cost Pick: Milorganite

Milorganite Lawn and Garden Earth Friendly Fertilizer with Iron Covers 2,500 Sq Ft
Highlights
Organic composition
Reduces watering needs
Promotes lush growth

When it comes to finding an affordable yet effective fertilization solution, we can’t recommend Milorganite Lawn and Garden Fertilizer enough.

This organic powerhouse not only reduces the need for watering but also promotes lush growth, which means you'll spend less time mowing and more time enjoying your vibrant lawn.

Used on golf courses for decades, this eco-friendly option is as reliable as it is effective.

While you might notice a slower start, the results are worth the wait.

For our team, it’s the go-to choice for those seeking high-quality, low-cost lawn care!

Be sure to also check out the best low nitrogen fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Milorganite on Amazon

Best for Quick Greening: Scotts Green Max

Scotts Green Max Lawn Food, Lawn Fertilizer Plus Iron Supplement for Greener Grass in 3 Days, 5,000 sq. ft., 16.67 lbs.
Highlights
Quick greening results
Safe on all grass types
No staining on surfaces

When it comes to achieving that lush, green lawn in record time, we’ve found a true winner in Scotts Green Max Lawn Food.

This dual-action fertilizer works its magic in just three days, thanks to its special formulation enriched with 5% iron that promotes fast greening.

We appreciate that it’s safe for all grass types and won’t stain your driveway or patio—a huge bonus!

However, keep in mind that careful application is key for best results.

Overall, for anyone wanting to elevate their lawn without the wait, Scotts Green Max is truly the way to go!

Be sure to also check out the best seaweed fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Scotts Green Max on Amazon

Best for Long-Lasting Nourishment: Eco Solutions Fertilizer

Fertilizer for Lawns, Sports Fields, Golf Courses, & Commercial Properties - 25-5-10 Formula with 65% Slow Release Granular Nitrogen Fertilizer - Ideal Grass Fertilizer for Lawn Care - 10kg (22lb) Bag
Highlights
Long-lasting nutrients
Improves lawn thickness
Easy to apply

We’ve crowned this slow-release lawn fertilizer as the Best for Long-Lasting Nourishment, and for good reason!

With an incredible up to 110 days of feeding, your lawn will get the extended care it deserves.

This professional-grade formula is a game-changer for residential turf, parks, and sports fields alike.

It not only enhances soil structure but also aids in better water and nutrient usage, resulting in a greener and thicker lawn.

The blend of slow and quick release nitrogen, along with safe levels of sulphur and potassium, makes it a fantastic choice.

While it comes at a higher price point, the results are definitely worth it!

Be sure to also check out the best monstera fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Eco Solutions Fertilizer on Amazon

Andersons PGF Complete 16-4-8

The Andersons Professional PGF Complete 16-4-8 Fertilizer with 7% Humic DG 5,000 sq ft
Highlights
Phosphorus-free
Uniform growth
Small particles for coverage

When it comes to achieving a lush and vibrant lawn, we found this phosphorus-free slow-release fertilizer to be a top contender.

Its fine particle size is a game-changer, allowing for twice the coverage per square foot compared to other products.

We love that it incorporates humic acid, boosting turf quality while keeping nutrient needs in check.

Plus, with its unique MUtech coated nitrogen, you can expect uniform growth that lasts.

Just note that you’ll need to give it a good watering to activate it.

Despite being on the pricier side and unavailable in California and Oregon, this product is definitely worth considering for your lawn care toolkit!

Be sure to also check out the best ixora fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Andersons PGF Complete 16-4-8 on Amazon

Gardenwise 10-10-10 Fertilizer

10-10-10 Plant Fertilizer Slow Release – 10 10 10 All Purpose Granular Garden Fertilizer for Fruit Trees, Evergreens, Vegetables, Arborvitae, Fig Trees, Shrubs, Pines, Oaks, Flowers (1/2 Quart)
Highlights
Balanced nutrient composition
Slow-release for sustained feeding
Easy-to-apply granules

When it comes to cultivating a vibrant garden, we believe the 10-10-10 Granular Fertilizer is a game changer!

This all-purpose solution provides a perfectly balanced nutrient mix, ensuring your plants grow strong and healthy.

With its slow-release formula, we appreciate that it offers up to eight weeks of continuous feeding—less work, more blooms!

The fine granules make application a breeze, promoting even distribution and maximum absorption.

Though it comes at a slightly higher price, the payoff is incredible vibrant blooms and thriving veggie patches.

If you're ready to take your plants to new heights, this one is definitely worth a try!

Be sure to also check out the best adenium fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Gardenwise 10-10-10 Fertilizer on Amazon

Scotts Turf Builder Slow Release Lawn Fertilizer

Scotts Turf Builder Lawn Food - Fertilizer for All Grass Types, 5,000 sq. ft., 12.5 lbs.
Highlights
Effective results
User-friendly application
Works on any grass type

When it comes to feeding your lawn, Scotts Turf Builder Lawn Food truly stands out.

We love how effortlessly it feeds and strengthens grass, helping it develop strong, deep roots while enhancing its ability to soak up precious water and nutrients.

Whether your lawn is damp or dry, this versatile fertilizer can handle it all—it's tailor-made for any grass type!

In just one application, a 12.5 lb. bag covers a whopping 5,000 sq. ft. However, be cautious with application rates; too much can lead to burning.

Overall, this product is a solid choice for anyone looking to up their lawn care game.

Be sure to also check out the best lime tree fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Scotts Turf Builder on Amazon

Andersons 10-10-10 Fertilizer

The Andersons PGF Balanced 10-10-10 Fertilizer with Micronutrients and 2% Iron (5,000 sq ft)
Highlights
Fine particle size
Fast greening results
Micronutrients included

When it comes to achieving that lush, green lawn we all dream of, PGF Balanced 10-10-10 stands out as a top contender.

With its extremely fine particles, this professional-grade fertilizer ensures every inch of your yard gets the nutrients it craves.

We appreciate its flexibility—ideal for spring and fall applications—but it really shines with its quick-release nitrogen, providing immediate nutrition to your plants.

The added micronutrients and 2% iron lead to rich greening that’s truly impressive.

Just remember to blow off any spills from sidewalks to avoid unsightly stains!

Coverage is generous, too, reaching up to 5,000 square feet.

While it might be a bit pricey and isn't available in California, it delivers on performance for those ready to invest in their lawns.

Be sure to also check out the best organic bloom fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Andersons 10-10-10 Fertilizer on Amazon

Scotts Turf Builder

Scotts Turf Builder WinterGuard Fall Lawn Fertilizer for All Grass Types, 5,000 sq. ft., 12.5 lbs.
Highlights
Builds deep roots
Covers 5,000 sq. ft.
Quick visible results

When it comes to getting your lawn primed for success, we can't ignore the magic of this slow-release lawn fertilizer.

Designed to build strong and deep roots, it lays the foundation for a lush lawn come spring. Fall fertilization is when the magic happens, ensuring your grass is tough enough to withstand the winter chill.

We appreciate how it aids in repairing damage from heat and drought, all while improving nutrient absorption.

Plus, it conveniently covers 5,000 square feet, making it suitable for any grass type.

Just a heads-up—it's not ideal for freshly seeded areas, but for established lawns, it’s a winner!

Be sure to also check out the best grass seed fertilizer combo for more options! Also, here is the price history so you know exactly when to buy!

Price history for Scotts Turf Builder on Amazon

The Andersons Deep Green Slow Release Lawn Fertilizer

The Andersons Deep Green 24-0-11 Professional-Grade Lawn Fertilizer with 2% and Slow Release Nitrogen - Covers up to 10,00 sq ft (40 lb)
Highlights
Professional-grade quality
Uniform growth
Contains iron and manganese

When it comes to transforming your lawn into a lush oasis, we can confidently recommend The Andersons Deep Green Fertilizer 24-0-11.

This professional-grade product packs a punch with its slow-release nitrogen formula, ensuring your grass grows uniformly while developing a vibrant shade of green.

Enriched with 2% iron and manganese, it’s safe for all turf types during the growing season.

While the price is a tad higher, the stellar results make it worth every penny.

Just a heads-up: patience is key, as it may take a little time to see those stunning transformations.

Give your lawn the best—it deserves it!

Be sure to also check out the best hydroponic fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for The Andersons Deep Green on Amazon

Yard Mastery

Yard Mastery 24-0-6 Flagship Granular Lawn Fertilizer with 3% Iron, Bio-Nite™, 45 lb Bag Covers 15,000 sq ft, 6% Potassium, Micronutrients and 24% Slow Release Nitrogen Grass Fertilizer for Lawn Care
Highlights
Comprehensive lawn care solution
Slow-release nutrients
Large coverage area

When it comes to nourishing your lawn, we absolutely love Yard Mastery’s Flagship Fertilizer!

With a robust 24-0-6 NPK formula, it’s a comprehensive solution designed to support lush, green growth throughout the season.

The slow-release feature is a game-changer, providing steady nutrients over time and reducing your need for constant reapplication.

Plus, with an infusion of 3% iron and Bio-Nite, it enhances soil health and root strength.

Covering up to 15,000 sq ft, this fertilizer efficiently tackles lawn care and weed control.

Just a heads up—granules can be a tad messy, but the results?

Totally worth it!

Be sure to also check out the best pansy fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Yard Mastery on Amazon

Simple Lawn Solutions

Advanced 16-4-8 Balanced NPK - Lawn Food Quality Liquid Fertilizer - Spring & Summer Concentrated Spray - Any Grass Type - Simple Lawn Solutions (32 Ounce)
Highlights
Easy application process
High-quality ingredients
Works on all grass types

We’re thrilled to introduce you to the Simple Lawn Solutions 16-4-8 Lawn Food—a powerhouse for your yard!

Formulated with a complete blend of key macronutrients, this liquid fertilizer features the nourishing goodness of seaweed and fish, ensuring your lawn not only grows but thrives.

The ease of application means we can spend less time worrying and more time enjoying our lush, green oasis.

While it works on all grass types, be aware that coverage per bottle is modest, and you might wait a bit for those results to pop.

Nevertheless, your lawn deserves this kind of TLC!

Be sure to also check out the best acid fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Simple Lawn Solutions on Amazon

Southern Ag Granular Fertilizer Slow Release Lawn Fertilizer

Southern Ag All Purpose Granular Fertilizer 10-10-10, 5 LB Size: 5 LB
Highlights
Promotes healthy plant growth
Improves weak shrubs condition
Visible effects on vegetables

We’re excited to share our thoughts on the Southern Ag Slow Release Lawn Fertilizer.

This granular product delivers impressive results, promoting healthy plant growth and revitalizing weak shrubs.

We’ve seen visible improvements in vegetable gardens, making this fertilizer a robust option for those nurturing their green spaces.

However, be cautious—it's not the best fit for container plants, and you’ll need to follow the specific application guidelines to maximize your success.

With a solid 4.5-star rating from over 2,200 customers, it’s clear that this fertilizer is making waves in the yard and garden community.

Happy gardening!

Be sure to also check out the best knockout rose fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Southern Ag Granular Fertilizer on Amazon

Pennington UltraGreen Fertilizer

Pennington 100536576 UltraGreen Lawn Fertilizer, 14 LBS, Covers 5000 Sq Ft
Highlights
Quick greening
Extended feeding duration
Strengthens against heat

When it comes to achieving that lush, thick, deep green lawn we all dream of, Pennington’s slow-release lawn fertilizer stands out in our reviews.

With the power to quickly green your lawn and provide extended feeding for up to three full months, it’s a fantastic choice for any residential lawn.

Plus, it strengthens your grass against heat and drought, making it resilient when summer rolls in.

While it’s a bit pricey and does require a little watering after application, the results are worth it.

Just be cautious not to over-fertilize—your lawn will thank you!

Be sure to also check out the best hanging basket fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Pennington UltraGreen Fertilizer on Amazon

GreenView Fertilizer

GreenView Multi-Purpose Fertilizer, 33 lb. Bag - NPK 10-10-10
Highlights
Balanced NPK formulation
Easy to apply
Effective for various plants

We’ve got our hands on a remarkable slow release lawn fertilizer that’s hard to ignore!

With a balanced 10-10-10 NPK formulation, it’s perfect for everyone, from veggies and flowers to trees and shrubs.

We love how easy it is to apply, making garden care feel less like a chore.

However, be prepared for monthly applications—it’s not a one-and-done solution.

While the granulation isn’t as fine as some might prefer, its all-purpose formula delivers essential nutrients that plants crave.

Overall, this fertilizer is a fabulous choice for anyone looking to nurture their green spaces!

Be sure to also check out the best liquid nitrogen fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for GreenView Fertilizer on Amazon

Andersons Starter Fertilizer Slow Release Lawn Fertilizer

The Andersons Premium New Lawn Starter 20-27-5 Fertilizer - Covers up to 5,000 sq ft (18 lb)
Highlights
Encourages vigorous growth
Deep greening effect
Ideal for new sod

We’re excited to talk about the Andersons Starter Lawn Fertilizer—a fantastic choice for anyone looking to establish a lush, green lawn from scratch.

Specially formulated for new sod and seedling areas, this fertilizer provides an optimum blend of nitrogen, phosphorus, potassium, and essential micro-nutrients to foster vigorous growth.

The added 1% iron gives your grass that extra pop of deep green color, making your yard the envy of the neighborhood.

While it’s ideal for both spring and fall applications, be mindful that timing matters for best results.

Overall, with a stellar rating of 4.6 stars, this product is sure to help your lawn flourish!

Be sure to also check out the best lucky bamboo fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Andersons Starter Fertilizer on Amazon

Pendelton Fertilizer

18-3-6 All Purpose Liquid Fertilizer & Micro Nutrients (50% Slow Release Nitrogen) (32 oz.)
Highlights
High nutrient availability
Contains slow release nitrogen
Easy measure and pour

When it comes to nurturing your lawn and garden, Pendelton Turf Supply's slow-release fertilizer shines!

With a whopping 50% slow release nitrogen content, it keeps your plants thriving throughout the growing season.

We appreciate its high nutrient availability and bonus micro-nutrients that enhance aesthetic appeal and overall health.

The easy measure and pour design makes application a breeze, whether you’re caring for turf or ornamental plants.

Just remember, it does require frequent applications, so be prepared for a bit of commitment.

Overall, it’s a smart investment for lush greens and vibrant blooms!

Be sure to also check out the best liquid palm tree fertilizer for more options! Also, here is the price history so you know exactly when to buy!

Price history for Pendelton Fertilizer on Amazon

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