8 Best Winter Fertilizers For Your Lawn

A person fertilizing their lawn

Choosing the best winter fertilizer for your lawn to achieve a soft, dense, and greener look may take a bit of research. However, both organic and inorganic fertilizers for your lawn available in the market today are excellent in delivering stunning results.

Understanding how each product works and what results you’ll expect will help you pick the right fertilizer for the type of grass you grow.

This guide will help you take a closer look as to what the best lawn fertilizer recommendations are that you can consider to help boost your grass growth, softness, thickness, and richness without the fear of spoiling the grass aesthetic by burning it. So, let’s take a closer look!

Top 8 Best Winter Fertilizers

Our Top Recommended Choice

Azomite All-Purpose Fertilizer5,000 sq. ft.

Other Recommendations

Scotts Lawn Food5,000 sq. ft.
Miracle-Gro Lawn Food4,000 sq. ft.
Commercial Grade Lawn Solutions3,200 sq. ft
Safer Organic Lawn Fertilizer5,000 sq. ft.
Milorganite Lawn Fertilizer2,500 sq. ft.
Purely Organic Lawn Food5,000 sq. ft.
Dr. Earth Lawn Fertilizer2,000 sq. ft.

1) Azomite Micronized Bag Organic Nutrients for Lawn


Azomite Micronized Bag Organic Nutrients for Lawn

Product Specifications:
  • Manufacturer: Azomite
  • Item Weight: 44.2 pounds
  • Product Dimensions: 21.4 x 14.7 x 4.5 inches
  • Product Features: 
    • Suitable for all types of soil
    • All-purpose organic product
    • Ultrafine powder
    • Micronized trace minerals for plant’s enzyme production
    • 70 minerals and trace elements for optimum growth
    • Excellent for coating seeds, maximum germination, and root system

Azomite fertilizer is an all-purpose organic product that contains over 70 minerals and trace elements in ultra-fine powder.

This natural product is excellent for seed coating, particularly in maximum germination and initial growth. Moreover, it is also a champion in boosting the growth of flowering plants, vegetables, and even considered the best lawn fertilizer.

The micronized bag of Azomite contains the following analysis:

  • Soluble Potash (K2O) .2%
  • Calcium (Ca) 1.8%
  • Chlorine (Cl) .1%
  • Sodium (Na) .1%

It is highly recommended either for lawns with a percentage of 3.5 lbs. per 1,000 sq. ft. or flower beds about 1 lb. per 10 sq. ft.

This water-soluble natural fertilizer is used internationally both as a feed additive or as a soil enrichment for plant’s optimal growth in over thirty countries throughout the world.

  • Generally recognized as safe (GRAS) classification by the U.S. Food and Drug Administration (FDA)
  • Certified organic agriculture use by OMRI
  • Listed in the U.S. Code of Federal Regulations (21 CFR 582.2729) as an anticaking agent for livestock feed
  • Used by the FDA growers in the propagation of medicinal botanical species meant for human consumption
  • Contains trace minerals for enzyme production in plants
  • Does not burn grass
  • Water-soluble
  • Perfect for the lawn

2) Scotts 5,000-sq. ft. Lawn Food Turf Builder Starter

Scotts 5,000-sq. ft. Lawn Food Turf Builder Starter

Product Specifications:
  • Manufacturer: ScotchBlue
  • Item Weight: 15 pounds
  • Product Dimensions: 16 x 12 x 3 inches
  • Product Features: 
    • Promote faster root and blade development
    • Balanced nutrients for thicker new grass
    • Improve seeding results
    • Great sods and grass plugs
    • Safe for all types of grass
    • Covers 5,000 sq. ft.
    • Not for sale in Pinellas County, FL

The Scotts Lawn Food Turf Builder Starter is famous for establishing green lawns. It is one of the best lawn foods that promote fast root growth of about 70% and makes the grass denser by about 35%.

The best winter fertilizer is perfect for you if you’re either starting a new lawn, reseeding, or installing sod or grass plugs without worries whatever type of grass you grow.

And to make the process fast and successful, newly planted grass demands care by watering it once a day or as frequently to keep the soil moist.

Feeding your lawn at the right time is essential to maintain the grass aesthetic and mow to tidy when it reaches about three inches tall.

  • The fertilizer covers up to 5000 sq.ft. lawn space
  • Promote new root growth, denser and softer lawn
  • Suitable for all types of soil
  • Safe to use on any types of grass
  • Perfect for re-seeding an existing lawn
  • Not for sale in Pinellas County, FL

3) Miracle-Gro Water Soluble All Grass Lawn Food

Miracle-Gro Water Soluble All Grass Lawn Food

Product Specifications:
  • Manufacturer: Miracle-Gro
  • Item Weight: 5 pounds
  • Product Dimensions: 5 x 5.5 x 10 inches
  • Product Features: 
    • Feeds grass of all types
    • Formulated for turf-grass
    • High in nitrogen and chelated iron
    • Promotes root growth and denser grass blades
    • Covers up to 4000 sq. ft. per box
    • Instantly turns lawn green in a few days
    • Water-soluble lawn fertilizer

The Miracle-Gro Water Soluble All Grass Lawn Food is another high-quality water-soluble inorganic fertilizer in granular crystal form, which is suitable for all types of grass.

The turf-grass feeder made of Nitrogen, Phosphorus, and Potassium in the ratio of 24-8-16 is safe to use in any season of the year.

It works effectively in flourishing flowers, shrubs, trees, vegetables, or any plants both indoors and outdoors.

And for best results, reapply every two weeks to encourage fast root growth while the weather is cold. It will create a beautiful and greener lawn when the spring weather begins to roll.

After the application, you don’t have to worry about your kids and pets walking and playing on the grass immediately. The product is safe for plants, animals, and humans.

  • Encourages fast root growth and thicker grass blades
  • Covers up to 4000 sq.ft. of lawn
  • Turns the lawn into a healthy green in two weeks
  • All grass best lawn food
  • Safe to use in all seasons of the year
  • Safe for plants, animals, and humans
  • Feed flowering plants, shrubs, trees, vegetables, and turf-grass
  • The fertilizer will likely burn the grass when not thoroughly dissolved in the water.

4) Commercial Grade Turf Spray Simple Lawn Solutions

Commercial Grade Turf Spray Simple Lawn Solutions

Product Specifications:
  • Manufacturer: UAS of America
  • Item Weight: 3.1 pounds
  • Product Dimensions: 5.5 x 3 x 9 inches
  • Product Features: 
    • Commercial-grade intense lawn energy booster
    • Comes with a hose-end sprayer
    • Blend of iron, nitrogen, and micronutrients in liquid form
    • Covers up to 3,200 sq.ft. of lawn
    • Safe to use in any types of grass
    • Manufactured in the U.S.A.

The Commercial Grade Turf Spray Simple Lawn Solutions is one of the best lawn fertilizer in the market today. Its formula has an intense energy booster that comes with a hose-end sprayer, making the fertilizer the simplest solutions to your lawn.

This all-natural fertilizer is free from harmful chemicals. It helps improve soil resistance against excessive heat and cold.

It comes with premium organic food ingredients that are safe both for pets and kids. It also encourages the overall health of the lawn, promoting hardiness and tolerance against harsh weather.

The best lawn fertilizer has superior nitrogen and potash content of about 15-0-15 NPK, making it the perfect nutrient ratio to supplement for a greener lawn.

This fertilizer made of bioactive organics, high-grade urea, potash, sulfur, and hulic/fulvic acids absorbs quickly into the soil.

  • Easy to apply
  • Comes in liquid form
  • Concentrated energy booster
  • Safe to use in any grass
  • Bioactive organic lawn food
  • Promotes grass tolerance against harsh weather
  • All-natural fertilizer
  • Comes with ready to use hose-end sprayer
  • Makes a perfect supplement for a greener lawn
  • Some users find it tiring to refill the bottle spray a few times to complete the task.

5) Safer Brand Ringer Organic Lawn Fertilizer

Safer Brand Ringer Organic Lawn Fertilizer

Product Specifications:
  • Manufacturer: Safer
  • Item Weight: 25 pounds
  • Product Dimensions: 3.23 x 14.11 x 24.01 inches
  • Product Features: 
    • Covers up to 5,000 sq. ft.
    • N-P-K analysis 10-0-6
    • Safe to use on both warm and cold season types of grass
    • Non-burning formula
    • Plant-based product
    • Promotes a greener lawn in just 3-5 days
    • Balance the soil nutrients for a healthy lawn
    • Economical and effective lawn treatment
    • Encourage microorganisms to thrive under the soil.
    • Strengthens the grass tolerance against harsh weather

Safer Brand Ringer Organic Lawn Fertilizer is another best lawn fertilizer both for warm and cool-season types of grass.

The plant-based nutrients made of distillers grains, soybean meal, and sulfate of potash are a great organic option to achieve a greener lawn quickly in about 3-5 days after the application.

It is designed to restore the balance of nutrients under the soil. Besides, the fertilizer encourages the thriving of microorganisms, promoting healthy soil.

This 25-pound bag best lawn organic food covers up to 5000 sq. ft. and should be applied roughly every eight weeks for best results.

Also, you don’t have to worry about multiple applications. Since the product is plant-based, there is no risk of burning or the possibility of over-application.

  • Plant-based nutrients
  • No risk of burning formula
  • No offensive odor
  • Promotes thicker and greener grass blades
  • Balances nutrients under the soil
  • Greener lawns in just 3-5 days
  • Safe to use in any types of grass
  • All-natural fertilizer
  • Comes in granular form
  • Cost-effective
  • You have to water the grass after the application to activate the fertilizer.

6) Milorganite Organic Nitrogen Lawn Fertilizer

Milorganite Organic Nitrogen Lawn Fertilizer

Product Specifications:
  • Manufacturer: Milorganite
  • Item Weight: 36.7 pounds
  • Product Dimensions: 5 x 17 x 23 inches
  • Product Features: 
    • Slow-release fertilizer perfect for sandy soil
    • No grass burning formula
    • Takes longer between applications
    • Reduce mowing and conserve water
    • Covers up to 2,500 sq.ft. of lawn
    • Comes in granular form
    • Promote lush and quick growth
    • Water-soluble iron
    • Salt-free fertilizer
    • Safe to use in dry conditions
    • Does not contaminate groundwater

Milorganite Organic Nitrogen Lawn Fertilizer is one of the most trusted brands for over 80 years. The fertilizer is an eco-friendly slow release that will significantly improve the growth of your plants, trees, shrubs, and makes your lawn greener and softer.

And what makes this fertilizer more amazing is that it lessens the need for frequent watering. Also, it does not contain a burning formula, which means you can apply the fertilizer and need not worry about watering the grass after the application.

This organic lawn food contains about 4% non-staining, water-soluble iron for greener and thicker blades without excessive and undesired growth. And because the grass winterizer is made of 85% organic matter, it helps microorganisms thrive while nourishing the plants.

And one more thing, this slow-release lawn fertilizer does not contain salts, so you are assured it won’t contaminate groundwater. And apart from taking longer between applications, the 36-pound bag covers up to 2,500 sq.ft. of lawn.

  • Does not leach to groundwater or wells
  • Safe to use in all seasons
  • Suitable for flowering plants, trees, shrubs, and any types of grass
  • Safe both for kids and pets to walk on even after the applications
  • Perfect for greener and thicker grass blades
  • Lessens the needs for frequent watering
  • No risk of grass burning or over-application
  • A bit pricey than other alternatives

7) Purely Organic Plant-Based Lawn Food

Purely Organic Plant-Based Lawn Food in Winter
Product Specifications:
  • Manufacturer: Purely Organic Products, LLC
  • Item Weight: 25 pounds
  • Product Dimensions: 22.36 x 14.33 x 4.38 inches
  • Product Features: 
    • Promotes greener and thicker grass blades
    • Non-burning formula
    • Plant-based fertilizer
    • Covers up to 5,000 sq.ft.
    • Safe to use for all season long
    • Safe for pets and kids to go on the lawn even after application
    • 10-0-2 NPK analysis
    • No phosphorus

The Purely Organic Plant-Based Lawn Food has been used for many years to keep grass fields green and lush, especially in most professional sports venues, but you can now enjoy this for your home backyard.

This plant-based organic lawn food comes at a reasonable price. Moreover, the premium fertilizer can be easily spread evenly onto the lawn with a spreader.

You can use it as frequently as you want and need not worry about grass burning. This top quality fertilizer encourages healthy growth and a robust rooting system, and prevents invading weeds from making their way into your lawn.

This 25-pound bag of slow-release nitrogen is a 100% plant-based fertilizer that strongly smells of brewer’s yeast. The whole bag covers up to 5,000 sq.ft. of lawn.

And because the formula has no harmful chemicals, manure, and no unpleasant odor, it is safe for kids and pets to go in right after the application, making it convenient for the whole family to spend time on the softer, thicker, and greener lawn.

  • One of the most trusted brands for many years
  • Widely used in most professional sports venues
  • Cost-effective
  • 100% plant-based premium quality fertilizer
  • Easy to spread over the lawn
  • Encourages healthy growth and robust root system
  • Covers up to 5000 sq.ft. of lawn
  • No harmful chemical, manure, or unpleasant odor
  • Promote softer, thicker, and greener grass blades
  • Safe for kids and pets to go in even right after application
  • Unlike synthetic fertilizer, it takes a while to see the best results.
  • It smells strongly of brewer’s yeast.

8) Dr. Earth Super Natural with Trubiotic Lawn Fertilizer

Dr. Earth Super Natural with Trubiotic Lawn Fertilizer

Product Specifications:
  • Manufacturer: Dr. Earth
  • Item Weight: 9.3 pounds
  • Product Dimensions: 24 x 15 x 4 inches
  • Product Features: 
    • Covers up to 2000 sq.ft. of lawn
    • Formulated with a broad spectrum of beneficial soil microbes
    • 100% pure and natural blend of premium ingredients
    • 9-0-5 NPK analysis
    • Safe to use in any grass
    • Safe both for kids and pets
    • Significantly delivers fast results
    • Slow-release fertilizer in pellets form

Dr. Earth Super Natural with Trubiotic Lawn Fertilizer is one of the most impressive products from Diatomaceousearth that meets all health requirements either for your pets, plants, or for your lawn’s needs.

This multi-purpose lawn fertilizer comes in a powder form made of premium quality fishmeal, potassium sulfate, alfalfa meal, and seaweed extract.

And this 100% organic super natural lawn food offers a wide range of applications. Apart from being an excellent choice for your lawn, it is also exceptional in nourishing trees, flower beds, shrubs, and more. Plus, the product is also famous for health supplements to pet care.

And what makes this fertilizer one of the best is that it is so effective in controlling thatch.

The layer in between the grass and soil called thatch lessens when you apply the fertilizer. It allows the nutrients to penetrate down into the roots, helping the microorganisms to thrive at optimal conditions.

It helps the grass establish a sturdy rooting system and strengthens the plant’s tolerance against harsh weather.

Dr. Earth fertilizer will significantly enhance the soil in your lawn and deliver fast results. Besides, a single application can last up to three months, so you need not to worry whether you have enough time to reapply often.

  • Supernatural lawn food
  • Safe to use in any types of grass
  • Controls thatch build-up
  • Promotes a sturdy root system
  • Enhances the quality of the soil significantly
  • 100% pure organic
  • A single application can last up to three months
  • You have to water the grass after the application to eliminate the strong odor.

Best Winter Lawn Fertilizer Buying Guide

Fertilizing your lawn in the winter is a great way to help protect your grass in harsh weather and get it ready for the softer, thicker, and greener grass blades in the spring.

And to get the most out of your fertilizer, here are a few things to consider when choosing the right winter fertilizer for your lawn.

  • What Is The Right Time to Fertilize in Winter?

Timing is one of the most important factors to consider when considering winter fertilization. When applied too early or too late, the fertilizer might not deliver your desired results.

Fertilizer should be applied while the grass is still growing or before the soil freezes in winter. A late application is a waste of time and money because it won’t deliver the result you’re expecting.

  • Grass Types

Always consider the type of grass you grow. And pick the right fertilizer specifically designed for your lawn to achieve lush and gorgeous grass blades in spring.

  • For the First-time User

But, if you are using winter lawn fertilizers for the first time, you are probably having a hard time finding the right fertilizer for the types of grass you grow.

And in choosing the best and right fertilizer for you to use, you have to consider some factors like the type of grass and the climate you live in.

  • The NPK Analysis at the Back of the Label

However, the ingredients in which the fertilizer is composed of is one of the most critical components you have to look at, particularly the NPK numbers at the back of the label.

Effective winter fertilizer should have higher levels of phosphate and potassium. These nutrients will encourage root growth and strengthen the plant’s tolerance against harsh weather.

  • Safe for Kids and Pets

Although the lawn is far less gorgeous in winter months, it is still essential to pick a fertilizer that is both pet and child safe. It should be safe for your kids and pets to walk on right after the application.

  • Easy to Apply

Moreover, the lawn fertilizer should be easy to apply. Fertilizers in the market come in liquid, granular, or powder form.

Fertilizers in liquid forms are often the easiest to apply, especially if you have the right hose for the tasks.

The granular form, on the other hand, requires a spreader to get the correct amount of fertilizer your grass needs. Without it, the right ratio is difficult to achieve.

And the application of fertilizer in powder form requires you to monitor the weather before the day of the application.

Avoid fertilizing your lawn on a windy day. The chances are the powder can be blown across certain areas, thereby creating more coverage on some areas than others.

Final Thoughts

A winter lawn fertilizer is designed to strengthen the tolerance of your lawn against harsh weather. It helps to establish a sturdy root system and gets the turf ready come the spring.

However, what works for others is not guaranteed that it will work for you. You have to consider those essential factors above, and don’t forget to identify what type of soil you have too.

A healthy and green lawn with softer, thicker, and greener grass will improve the aesthetic value of your property. Your grass will become the envy of the entire neighborhood.

About Benita Abucejo

Hi there! My name is Benita Abucejo. What can I say? I truly love spending my days in the outdoors, specifically in the garden. Gardening has always been a strong passion of mine since I was a little girl. It has brought me so much joy and happiness that it is definitely safe to say that I will be a gardener for life. For a period of time, I was able to work with people who are into home gardening and I found it to be quite beneficial to my physical health, as well as my mental well-being. Here at Seasonal Preferences, I am going to share with you my experience and ideas so that you can fulfill yourself with the same satisfaction and happiness. Of course, if you have ideas, I would love to hear those as well! Being creative in the garden can really be quite fascinating so let's share our experiences and be the best gardeners we can be. With that being said, thank you for dropping by and please leave me a comment on one of my posts if you would like to get in touch!

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