Top 7 Best Organic Lawn Fertilizers | 2021 Reviews (Scotts)

If you find the right fertilizer, you can see the changes in your field in days. In about a week, you will see a significant change than before. However, if you select a bad fertilizer for your ground, you will create unrepairable damage for your field. Companies around us hope to increase efficiency and productivity by inputting harmful chemicals unsafe for our lawn. The best and safest way to ensure a good yield is to produce organic fertilizers to nurture your lawn. 

The question now is: “how do I find the best organic lawn fertilizer for me?” Well, we looked over the best organic lawn fertilizers out there to provide you seven of the best so you would not have to. Read and gain the knowledge to make your lawn look as brand new as ever. 

Top 7 Best Organic Lawn Fertilizers Reviewed

  1. LawnStar Chelated Liquid Iron (32 OZ) – Best Overall
  2. Scotts Turf Builder WinterGuard Fall Lawn Food – Best Value
  3. Espoma UL30 Organic Soil Acidifier Fertilizer – Editor’s Choice
  4. Safer Brand 9334 Lawn Restore Fertilizer
  5. Milogranite 0636 Organic Nitrogen Fertilizer
  6. Down to Earth Organic Feather Meal Fertilizer
  7. Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag

#1. LawnStar Chelated Liquid Iron (32 OZ) – Best Overall

LawnStar Chelated Liquid Iron (32OZ) for Plans - Multi- Purpose, Suitable for Lawn, Flowers, Shrubs, Trees - Treats Iron Deficiency, Root Damage & Color Distortion - EDTA- Free, American Made

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  • Restores Color 
  • Stable in highly alkaline soil (Up to 9.5pH)
  • Uses sodium glucoheptonate for increased safety
  • Compatible for flowers, shrubs, and trees 

LawnStar is one of the many companies that we feel will provide you the organic fertilizers for your lawn. They commit themselves solely to perfecting their craft to provide you nothing less than perfection. 

This chelated liquid iron fertilizer comprises mostly of 6% iron that contributes to a better and more efficient lawn growth. This product works well on Annual Ryegrass, Bahiagrass, Centipedegrass, Chewings Fescue, and almost any set of grass types you can imagine. This fertilizer convinces your favorite flowers, vegetables, shrubs, trees, lawns to continue to rise to the sun. More precisely, LawnStar treats lackluster symptoms at its core and revitalizes your garden back to its former glory. 

This product also ensures that your lawn will maintain a healthy condition throughout using the fertilizer. The 6% iron content will reach straight to the core of your plans. This component will treat the early signs of leaf chlorosis and the plants’ unfortunate death at once. 

More importantly, this fertilizer is free from EDTA. LawnStar continues to innovate products that are safe for the plants and us as well. This company provides a thirty (30) day return on the product if it does not meet your satisfaction levels. However, most people find this product the best one for them. Why return something that absolutely works! 

Positive significant difference Confusing directions 
Chelated liquid iron Nasty odor 
Easy to use 

#2. Scotts Turf Builder WinterGuard Fall Lawn Food – Best Value


Scotts Turf Builder Winterguard Fall Lawn Food, 12.5 lb. - Fall Lawn Fertilizer Builds Strong, Deep Grass Roots for a Better Lawn Next spring - Covers 5,000 Sq. Ft.

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  • Provides nutrients to repair damage from the summer heat 
  • Builds strong, deep roots for a better lawn 
  • Improved ability to absorb water and nutrients 
  • Covers 5,000 sqm on any grass type 

Another amazing product you must look at is the Scott Turf Builder Winterguard Fall Lawn Food. This company is one of the organic fertilizer companies dedicated to ensuring that your lawn will be looking its best by the end of the season. This fertilizer can reach over 5,000 sqm of land, making it the most desired product for many large-lawn owners. 

This all-season grass fertilizer is one of the most popular products made by the company. This fertilizer is known for being easy enough to use even for beginners with basic knowledge about their lawns. 

The fertilizer’s goal is to let the lawn’s green parts rise and remove the weeds that naturally destroy it. However, the challenge of this fertilizer is not to apply too much of the fertilizer. Most customers get the misconception of applying more fertilizer to their lawns. However, this fertilizer will end up burning the grass if you put too much of it. 

The other rule-of-thumb when applying this fertilizer is to ensure that fertilize your lawn in the evening. Applying this fertilizer during sunlight will burn the grass as well. 

Nevertheless, you will receive the yard you are looking for if you apply the fertilizer properly. The fertilizer ensured that the product is safe to use immediately after you apply it to your grass. This product will ensure that you will create the best lawn out there for your family. 

Produces loyal and satisfied customer  Might damage lawn if not used properly 
Significant progress after use Expensive 
Great value 
Easy to use 

#3. Espoma UL30 Organic Soil Acidifier Fertilizer – Editor’s Choice


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  • Lowers pH to optimum range 
  • Item Weight: 30 lbs 
  • Suitable for blueberries and hydrangeas 

Espoma created a soil acidifier primarily aimed to ensure that your plants will rise into good-looking and healthy plants. This organic fertilizer ensures that the fertilizer is safe enough to use without damaging any parts of the lawn. 

This fertilizer is created for the people who are planting blueberries, hydrangeas, or any type of fruit. The fertilizer is gentle enough to let these plants grow to its maturity and remove any contaminants that will prevent its growth. You will begin to see a steady and significant growth without the worry of particle contamination. 

If you are still hesitant about purchasing this product, we recommend checking the number of satisfied customers they helped. If applied correctly, the customers should begin to see significant improvement in a matter of weeks. This organic fertilizer will ensure your lawn grows steadily and naturally to the kind of lawn you would want it to be. 

Conversely, the primary disadvantage of this product is how slow the progress is compared to other fertilizers. Since this product contains Gypsum, it does not compare well to the acidifying capabilities of sulfur-rich fertilizer. 

Nevertheless, this product chooses to slow down the progress of the lawn to ensure its overall quality. If you have the patience to wait for the perfect lawn you crave, then investing in this product is best for you. 

Works amazing on hydrangeas blueberries Contains Gypsum which does not contain same acidifying capabilities as sulfur.
Works great in almost any soil 
Acid loving 

#4. Safer Brand 9334 Lawn Restore Fertilizer


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  • Revitalizes lawn by strengthening root systems 
  • Greens up within 3-5 days 
  • Covers around 6,250 sq ft. 
  • Protects plants from diseases 
  • Contains fuel beneficial organisms 

The brand name says it all. Safer Brand is dedicated to the lawn’s overall perfection by providing quality fertilizers to unleash its potential beauty. This brand performs its duty properly without any manure, avoid any smelly annoyances. This fertilizer is best suited for lawn owners who already have established lawns. This fertilizer will ensure that it will grow thick, green grass fields that every lawn owner looks for. 

The Lawn Restore Fertilizer is designed to rejuvenate your lawn by creating a healthier ecosystem within the grass. This company continues to research and refine their product to meet their consumers’ needs. This rejuvenation technique is supported by over 25 years of research to ensure that they provide the best high-quality fertilizer out there. 

This product contains no manure, avoiding the lawn owner with the annoying smell. Further, unlike its other competitors, you can apply as much fertilizer as you want on your lawn without any worry. They upgraded this fertilizer to ensure that it will not damage the grass in any way. 

You will need to be more patient in waiting for the results this fertilizer will provide you. Since it’s organic, the process of growth will be more natural than other fertilizers. However, patience will yield good fruits. If you apply this fertilizer three times to your lawn, you will see the expected results you want in weeks. 

Restores lawn quicker than other products Development is slacking back from its other competitors 
Good value for money May damage the lawn if not applied properly 
Safer brand Expensive 

#5. Milogranite 0636 Organic Nitrogen Fertilizer

Milogranite 0636 Organic Nitrogen Fertilizer, Safer and Slow Release, for Lawn and Grass, Granular Nitrogen Fertilizer 32 lbs (Bundled With Pearson Protective Gloves)

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  • 4% iron which contributes to darker green color of grass 
  • Does not contain potassium 
  • Meets all EPA standards 
  • Natural repellant against bugs, bunnies, and deer 

Milogranite is another one of the most popular organic lawn fertilizer brands out there. This company is dedicated to ensuring that the user will receive all the necessary benefits to make his lawn aspirations a reality. Through tedious research and refining, they created a project that will produce the optimal results in the least amount of time. 

This organic fertilizer caters to individuals who wish to create a deeper green lawn. Further, you can be an owner hoping to plant more trees, vegetables, and flowers. More precisely, you must be dreaming of creating a beautiful ecosystem within your garage. This organic fertilizer will help you improve your lawn’s health to maximize the possibility of maximum growth. 

Another benefit of using this fertilizer is the capability of applying this fertilizer as many times as you see fit within the growing season. However, be careful not to overdo it since it could damage your lawn more than how it repairs. It also does not prefer any season to grow. More precisely, this lawn fertilizer does not need to be installed early in the morning for maximum progress. Its low NPK formula also allows you to continue using the product without burning the grass. 

More importantly, this product also is friendly to the people using the lawn. If you have kids, they will not be negatively affected by this fertilizer. There are no harmful chemicals that could hurt children in this formula. 

Significant change after use Needs to be carefully applied 
Suitable for all plants 

#6. Down to Earth Organic Feather Meal Fertilizer

Down to Earth Organic Feather Meal Fertilizer Mix 12-0-0, 5lb

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  • Slow-release, nitrogen-rich fertilizer 
  • Friendly to vegetable gardens, containers, trees, shrubs, and the like 

Feather Meal is another amazing alternative for growing and beautifying your lawn. This fertilizer consists of the feathers of poultry animals that were used for their meat. The company combined these feathers and ground it to form a finer powder. This compound is used to make your lawn look better and greener than ever before.

This product is an excellent source of Nitrogen if your lawn is severely deprived of it. Its NPK ratio allows the product to specialize solely on this to satisfy your lawn’s needs. However, the fertilizer progress is relatively slower than its other competitors since most of the nitrogen comprises of animal feathers. However, if you are patient and diligent with your lawn’s growth, it will absolutely pay off in the long run.

The primary feature of this product is its ability to grow plants like vegetables, fruits, and the like. Applying this fertilizer to grow healthier plants for harvest will give you the necessary platform to do so. More precisely, it will be easier to grow your vegetables in a field nourished with this fertilizer. 

In the long run, this product aims to improve your soil structure over time. After using this product religiously, you will be creating a better surface for future planting projects. 

Keeps animals away  Might be harmful to human health 
Nitrogen-rich Uses animals 
Works great Expensive 

#7. Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag

Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag

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  • Designed to create more nutritious and tasty vegetables
  • Contains no GMO 
  • 100% organic and natural ingredients 

Dr. Earth is another extremely popular organic company dedicated to producing natural and safe compounds for your lawn. This company is dedicated to creating innovative products that will keep your lawn healthy without the negative effects of chemical use. You will not see any chicken manure, GMO, and biosolids in their product. Instead, the product contents consist of everything particularly healthy for your lawn. 

This product features a nutrient ratio of 9-0-5. More precisely, this product mainly consists of nitrogen, phosphorus, and potassium to contribute to this ratio. Most of the formula must consist of nitrogen since this is important for effective green leaf growth. The larger the compound of nitrogen, the better the output will be. Just be careful not to exceed the company’s recommended amount. 

Further, potassium will provide the necessary strength for the grass to hold water and deal with water stress. This is to allow your plants to continue to thrive even if you forget to water the grass daily. 

Overall, this product is an excellent way to ensure your plans have a healthy and steady growth to contribute to your lawn’s overall aesthetic. Use this product to ensure that your lawn will always remain healthy.  

Works great on different grass fields Might cause damage if applied incorrectly
High recommended by customers 
A must-have in the garden 

Best Organic Lawn Fertilizer – Top Pick 

After analyzing each fertilizer and its advantages and disadvantages, we believe that the LawnStar Chelated Liquid Iron Fertilizer will provide you with the best results for your precious lawn. This decision stems from the product’s ability to maintain its organic nature while producing fast and beautiful results on the lawn. 

It was also very difficult to find a review that portrayed its negative effects. This product continues to satisfy customers around the world. The only source of negative reviews stems from customers not applying the fertilizer properly on their surface. However, the customers that did it right are now reaping the benefits of their buying decision. Purchasing this product will provide you a sure way of establishing beauty in your lawn. 

This product is also safe for you to use without the danger of contaminating and damaging your health. The organic nature of the product removes the unnecessary contaminants used by other companies. Instead, this product will provide you organic compounds dedicated to the plant’s overall health. 

This fertilizer also welcomes many different lawns that you wish to create. You can apply this fertilizer on almost any grass surface and continue to thrive. The product’s nitrogen compound allows you to see the green, revitalizing, fresh grass after weeks-long work. 

More importantly, this product also contributes to shaping your lawn to prevent the grass from spiraling back to its state before. This fertilizer constantly increases your lawn’s health to make it more independent for planting. 

The biggest advice we can give you when using this product is to properly read the directions on the label. This strategy will ensure that you are completely embodying the product’s purpose. More precisely, reading the directions will ensure that you will not jeopardize your lawn’s overall quality. 

If you are still unsure, feel free to also check out tutorial videos and consult professional help for the needed guidance in maintaining your lawn. 

Best Organic Lawn Fertilizers Brands

The companies we featured here are all amazing companies that continue to innovate products that will naturally benefit your lawn without damaging the health of those around you. After analyzing each organic company’s star products, we think that Scott Turf Fertilizers is the best product for you. 

Scott Turf is one of the most advanced companies in terms of research. This company continues to find ways to create the best products that cater to their consumer’s needs. You can assure yourself that everything this company will produce for you has been tediously analyzed to provide you the best results. 

It was extremely difficult to find negative remarks about this company. Most of the negative comments stem from the consumers’ inability to apply the fertilizer properly. Sometimes, another fertilizer is best suited for the kind of grass they are planting — even though this company ensured their products to be compatible with all kinds of terrain. 

This company also provides you the necessary guidance when building your lawn. You will not need to go through the process blindly since this company will provide you the necessary tips to make your lawn beautiful. 

Scott Turf provides a variety of products that you know will best suit you. You may always feel free to contact any of their staff to provide you their own professional opinion about their product. Becoming brand loyal to this company will not bring you demise, but rather assurance in quality. 

How to Find the Best Lawn Fertilizer for You? – A Buyer’s Guide 

Deciding on the fertilizer for your lawn is very difficult, especially with the numerous options you have at your fingertips. However, you can limit your choices to a select few when you understand what your lawn really needs. Here are a few factors to consider helping you decide which fertilizer is the best for you. 

Plant Nutrients

Fertilizers contain a compound within them that caters to a lawn’s specific needs. Some fertilizers contain all the necessary nutrients to contribute to your lawn’s growth. However, some fertilizers specialize in one nutrient that your lawn direly needs. 

One of the biggest nutrients your plant needs is nitrogen. Nitrogen is used to allow your plants to produce new tissues. Providing sufficient Nitrogen to your plants is vital to your lawn’s overall health. However, you must also be careful when providing fertilizers rich in Nitrogen. Little Nitrogen stunts the growth of your plant, preventing it from reaching its fuller potential. On the other hand, abundant use of Nitrogen will result in your plant not producing satisfactory yield. 

Phosphorus stimulates root growth to improve and increase seed size. The plant must be planted in a soil of 6.5pH-6.8pH to receive an adequate amount of phosphorous. Potassium is used to contribute to the overall vigor of the plant. Potassium will prevent any of your plants from contracting diseases coming from bacteria. 

Fertilizer Ratio

In many fertilizers, there will be a ratio indicated on the package. If you are completely unsure about what your lawn needs, you may opt for a 5-5-5 fertilizer. This means that the compounds of the entire fertilizer comprise equally Nitrogen, Phosphorus, and Potassium. This will ensure that your lawn is not getting too much of one thing and an equal proportion of all necessary nutrients. 

However, there is also terrain that needs more of a particular nutrient than the other. For example, the soil you planted in might be rich in Phosphorus but not in Potassium and Nitrogen. This means that taking an equal-proportioned fertilizer will result in one nutrient gaining more than the other, and we both know what happens when a plant gets the unnecessary amount of a nutrient. 

Thus, to be completely safe, have a professional evaluate what your soil needs. If you know what your soil needs, you may find the fertilizer compound that contains more of that needed nutrients than the other. This will ensure that your plant is getting more of what it needs and enough of what it already has plenty of. 

There are many more considerable factors that you can think of when deciding on your fertilizer. However, if you want the bare minimum while still noticing significant progress on your lawn, then think about these two things. 

Then, if you want to continue to find the very best products for your lawn, you may also consider factors like foliar feeding, pH levels, and organic vis-à-vis Synthetic fertilizers. 

Finally, if you are still confused with the kind of fertilizer you want to purchase, you may want to consult a professional regarding what fertilizer you need. These professionals will provide you the necessary input you need to make the most accurate buying decision. In this way, you will be providing what is best for your lawn for a small consultancy fee. 


We tried to show you seven (7) of the best organic fertilizers we believe will best suit your garden. We also provided our own input on which we think is the best product out of the seven alternatives we provided for you. We also showed you the company we feel is the best company to purchase our products from. However, the choice –in the end– must come down to your buying decision and needs. 

Purchasing a good fertilizer will determine what kind of garden you will have in the future. Therefore, tread carefully and make sure that you only begin planting your fertilizer when you know that this is really what your soil needs. Nevertheless, the fun is in the learning experience you will have over time. As you continue to try new things, you will also determine what fertilizer you will use for that garden you love so much. Good luck! 

FAQs (Frequently Asked Questions)

Are fertilizers dangerous to your health?

Traditionally, fertilizers are indeed very dangerous to your health, especially for younger children. Organic companies are continuing to create products that remove this health hazard that many lawn enthusiasts fear. However, still be wary of the health hazards fertilizers have towards your kids. 

How can I make my grass thicker and greener?

Some fertilizers contribute to the overall thickness and greenness of your lawn. Try to find products in the market that cater best to thicker grass. However, creating thicker grass will also depend on the soil beneath you.  

What is the best fertilizer for early spring?

We recommend applying a 20-5-10 where more attention is brought upon a Nitrogen-rich fertilizer. This will allow the plants to slowly release nitrogen effectively. 

Is organic fertilizer better than chemical?

Investing in organic fertilizer is far better than buying a synthetic one. Organic fertilizers provide authentic and fresh ingredients to contribute to the overall compound. Synthetic fertilizers may bring about dangerous diseases for you and your plants as well.

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