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5 Best Organic Lawn Fertilizers for Spring in 2019

Last Updated: 16 July 2019

Without the right fertilizer, it is impossible to create a beautiful green lawn. However, grass cover can be spoiled if nutrients are picked and used the wrong way. In order to prevent this, it is necessary to choose the best organic lawn fertilizer in advance. Today the market is full of various offers by famous manufacturers, but which of them is the best? Our rating and organic lawn fertilizer reviews, which are based on our own research, will be helpful to make the right choice.

What Is An Organic Lawn Fertilizer?

Organic are fertilizers, which consist of plants, animal waste products, and industrial waste. Manure, compost, straw, bird droppings, sawdust, silt, and peat belong to the natural top dressing. Organic fertilizers, as well as minerals, contain calcium, phosphorus, nitrogen and other nutrients. However, the natural top dressing improves the condition of the soil, saturating with useful substances. Mineral fertilizers only affect the lawn grass, without affecting the soil.

The advantages of natural fertilizers also include:

  • The ability to increase soil fertility, regulate acidity;
  • The ability to accelerate the photosynthesis of lawn grass;
  • Increased access of air and water to the roots of plants;
  • Creating a favorable environment for beneficial soil bacteria.

Top 5 Organic Lawn Fertilizers Compared And Reviewed

best value
Scott’s Natural Lawn Food
Builds a thick, green lawn
Rating: 10 / 10
Price: See Here
best price
Milorganite Organic Fertilizer
All-purpose fertilizer
Rating: 9.8 / 10
Price: See Here
Dr. Earth Lawn Fertilizer
Promotes a hardy root system
Rating: 9.6 / 10
Price: See Here

1 place :
Best Overall: Scott’s Natural Lawn Food

Best Overall: Scott’s Natural Lawn Food

Scott’s is famous for its fertilizers, and Natural Lawn Food is very popular among people who take care of their lawns. This is the best organic lawn fertilizer with 11-2-2 NPK ratio. Its all-natural formula contains feather, meat, bones and blood meals plus sulfate. High level of nitrogen will help the grass to grow quicker and have a dark green color. Low content of phosphorus and potassium take care of the soil in general, nourishes it well and is able to make the root systems of plans stronger. Moreover, based on organic lawn fertilizer reviews, Scott’s Natural lawn food is safe for children and animals.

pros +
Powerful 4-stroke engine
Covers 4,000 sq.ft lawn
Is the best pet friendly lawn fertilizer
Builds a green lawn quickly and in a natural way
Is an all-season fertilizer
cons -
The odor is attractive to pets

2 place :
Best Organic Fertilizer For Grass: Milorganite Organic Fertilizer

Best Organic Fertilizer For Grass: Milorganite Organic Fertilizer

Milorgranite is another popular organic lawn fertilizer to consider if you make your mind to move from the chemical variants. It contains a special organic formula, which makes this product safe for pets and kids. Milorgranite with its 5-2-0 NPK ratio will help to rejuvenate the grass that is unhealthy and will nourish the soil under green lawns, flowers, vegetables, and trees. The effects will be noticeable after a week or so. Moreover, it is possible to cover the soil with this best organic lawn fertilizer 4 times a year. Among the working nutrients, it is necessary to mention zinc, copper, manganese, and sulfur. Keep in mind, Milorganite is checked for the presence of heavy metals and pathogens on a daily basis.

pros +
High-quality fertilizer
Best organic fertilizer for grass and plants
Is safe for kids and pets
Can be used for golf courses
cons -
Covers only 2,500 sq.ft

3 place :
Best Organic Fertilizer With Phosphorus: Dr. Earth Lawn Fertilizer

Best Organic Fertilizer With Phosphorus: Dr. Earth Lawn Fertilizer

Dr.Earth Lawn Fertilizer is an all-natural product, which will be a real finding for your beautiful lawn. It was created taking into account all the peculiarities of the growing grass and its needs. The specially developed formula of leaf extracts from plants and various bone and fish meals make this product unique and super-helpful even for controlling the roots of the grass. This fertilizer will be working inside the soil for 3 months. This model contains phosphorus, so if you want to have a healthy lawn, this best organic lawn fertilizer will help you to reach the best results.

pros +
Powerful 4-stroke engine.
All-season fertilizer for lawns
Is safe for children and home animals
Nourishes existing grass
Strengthens the roots of the grass
cons -
Has a strong odor

4 place :
Best Budget Organic Lawn Fertilizer: Safer Brand Lawn Fertilizer

Best Budget Organic Lawn Fertilizer: Safer Brand Lawn Fertilizer

Safer Brand fertilizer is another product to consider for a better quality of the lawn. It is developed of all nutrients developed from plants without using any animal bio-solid, so the odor is not awful. It follows a special lawn-restoring formula with 10-0-6 NPK ratio. Based on organic lawn fertilizer reviews, just after you start applying this organic lawn fertilizer, the grass on your lawn will become dark green and thick. It also takes care of the root system of all of your plants and helps to hold the water in the soil for a longer period of time. With this product you will definitely believe in miracles and neighbors will envy you.

pros +
Covers an area of 5,000 sq.ft
All-natural formula of a safe lawn fertilizer
Doesn’t have a bad odor
Excellent price
cons -
Attracts flies

5 place :
Best Natural Garden Fertilizer: Espoma Organic Fertilizer

Best Natural Garden Fertilizer: Espoma Organic Fertilizer

Espoma has been around for many years, and it is famous for developing organic fertilizer. The product under review is based on poultry manure and feather meal. NPK ratio is 8-0-1, which is great enough for the lawns. It means that you will be able to control the grass that will be growing on a constant basis. Moreover, this best organic lawn fertilizer is able to protect the grass in summer and make it stay thick and green. With a 30-pound package you will be able to cover the area of 5,000 sq.ft. If you have kids and pets at home, you can allow them playing on the lawn because it is absolutely safe.

pros +
Covers 5,000 sq.ft lawn
Eco-friendly fertilizer
Improves the quality of the lawn in summer
Shows quick results
cons -
Is a bit pricey

Best Organic Lawn Fertilizers Of 2019: Buying Guide

What Is NPK Ratio?

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Nitrogen is responsible for the growth of plants, forms leaves, and stem. Therefore, this element is primarily necessary for the plant in the vegetative phase. With a nitrogen deficiency in the nutrient medium, the leaves are the first to suffer – they become pale, turn yellow and wither. Excess nitrogen, especially during flowering or fruiting, slows the growth of the plant and can cause problems with the transport of nutrient solution or water.

Phosphorus is responsible for metabolic processes and is involved in the formation of the plant. It enhances the activity of proteins and is involved in the construction of plant cells. Phosphorus forms the root system and promotes seed germination. This element plays a very important role at the stage of flowering and fruiting. If there is not enough phosphorus to the plant, then the old, lower leaves curl, wither and fall. Deficiency of phosphorus leads to a weakening of the immune system and increases the likelihood of disease. The excess of phosphorus is manifested in a decrease in yield, the tops and edges of the leaves burn out, the new leaves grow thin, and the lower ones curl.

Potassium is especially important for flowering and fruiting crops. If this macro element is deficient, your green pet will not bloom. If it lacks this element, then ammonia gradually accumulates in its cells. The lack of potassium is manifested in the form of tissue death: the old leaves turn pale, the stems become thinner and become brittle, the tops and edges of the leaves become rusty, the new leaves shrink and have a darker shade. When there is an excess, the lower leaves curl, the internodes become shorter, the tops and edges of the leaves turn brown and die.

Organic VS Synthetic Lawn Fertilizers

Organic fertilizers are substances of natural origin, which are produced by nature. They contain the necessary elements for the active and fruitful growth of plants.

In most cases, the production of the best organic fertilizer occurs without human intervention in the process of decomposition of products from the vital activity of plants or animals. The advantage of organic fertilizing is that plants absorb them very quickly, which is not the case with chemical fertilizers.

It is impossible to say that organic are better than mineral fertilizers. Since all gardeners are inclined to believe that to get a large and high-quality crop, it is best to use fertilizers in the complex, alternating them according to the prescribed norms. A well-known benefit of organic fertilizers is that they are the safest of all since they are created by natural means and contain exactly those useful trace elements in the proportions that are necessary for the lawns. Organic grass fertilizer contains such mineral elements as calcium, potassium, phosphorus, nitrogen, and others. At the same time, synthetic fertilizers represent many technological advantages and are the main type of feeding most of the hydroponic systems. Naturally, such fertilizers are preferable because they are soluble in water and thus take the form most available to plants. This also implies that in any hydroponic system, it will be the synthetic fertilizers that are preferable because of their easy interaction with water. Organic fertilizers are inferior in this regard since much more effort is needed to completely dissolve them in water and still, they will remain less accessible to plants. Organic grass fertilizer must be applied directly to the root zone of the plant. Based on organic lawn fertilizer reviews, the use of too many synthetic fertilizers plays a significant role in the degradation of the fertilized soil, and it should also be noted that there are practices of using organic fertilizers with the same result. At the same time, the use of organic fertilizers in the right amount can reverse these malicious processes. While organic fertilizers can be a solution to the problem of soil deterioration, mineral fertilizers are the most suitable technological solution for hydroponic systems. So, for the lawns, it is much better to choose organic fertilizers as they are eco-friendly and effective.

Value of Organic Fertilizer

Nature itself laid the foundations of the cycle in the plant world. One plant dies, goes into the soil and becomes a favorable condition for the growth of the new. Organic fertilizers are harmless not only for the harvest but also for the environment in general. This feeding system is primarily focused on the soil itself, enriches and makes the soil fertile. This approach is promising in all respects. Everyone wants his lawn to be thick and beautiful regardless of its size: although it will be a small green patch of land in the garden, even a huge golf course with high hills. The appearance that lawn depends not only on the type and quality of seeds but also on the quality of care: it must be cut, watered and fertilized with the best organic lawn fertilizer regularly. Therefore, to create a beautiful and thick lawn, you need to give it your attention on a regular basis. For many people, the main care of the lawn is watering it. But water gradually washes away useful substances from the soil, which leads to the fact that the grass begins to turn yellow and dry, or it gets light and unhealthy shade. To prevent such problems, it is necessary to use the best organic lawn fertilizer, because this is the key to the growth and health of the lawn. Thanks to the choice of the best organic lawn fertilizer, the lawn will be staying thick and green all year round. The best organic lawn fertilizer usually contains the basic nutrients necessary for plants – the elements nitrogen, phosphorus, and potassium. Remember this combination is the basis of nutrition of any plants. Nitrogen supports the intense green color of the grass and affects the growth rate as it participates in two important processes – photosynthesis and protein synthesis. Plants need phosphorus for proper metabolism, flowering, and seed formation. Potassium regulates the water balance, is responsible for the elasticity of plant tissues, as well as the disease resistance of the grass.

Types Of Organic Fertilizers

The composition of organic fertilizers includes many components that affect the growth and yield volumes (calcium, iron, magnesium, potassium, etc.). The main difference from the mineral fertilizers developed in the laboratory is that all these elements are of natural origin.


It is the most popular fertilizer among all natural ones. Manure is universal for any type of soil and is also absolutely suitable for all types of plants. After such a one-time feed, the soil is enriched with useful trace elements for several years.

Chicken Manure

The nutritional value of chicken manure can be compared with complex mineral fertilizer. This is a storehouse of nitrogen, potassium, magnesium, phosphorus. Saturated with bacteriophages, it not only fertilizes but also disinfects the soil, suppressing a number of pathogens.

Valuable Peat

The main advantage of peat is to increase the humus in the composition of the soil, which leads to high yields. Scientists have noticed that this option reduces the content of nitrates in fruits almost twice, protecting them from various toxic chemicals that have fallen into the soil. Peat is quite difficult to spoil the soil. You can add annually under the digging, as well as pour under the trees and shrubs.


It is the simplest organic fertilizer available to any summer resident. At the site, you need to place a special box, the bottom of which is filled with sawdust (can be mixed with dry leaves). Next, fill with a mixture of plants (grass, leaves, and weeds), land and cow manure.

Bone Meal

This kind of organic grass fertilizer is rich in calcium and phosphorus, increases the growth of the crop almost doubled. Also, it is possible to find an organic liquid fertilizer, which is also great because it is rapidly absorbed. The only disadvantage of liquids is that they should be applied every 2-3 weeks.

The Best Organic Lawn Fertilizer – Conclusion

Based on our homemakerguide research and organic lawn fertilizer reviews, Scott’s Natural Lawn Food is our top pick. It is chosen to be the top rated organic lawn fertilizer among the products we reviewed. This best organic lawn fertilizer deserves your attention because it is all-natural, consists of organic components and is able to keep your lawn green all-year-round. Also, if you are looking for the fertilizer that would be safe for your kids and pets, this one would be a great fit. It doesn’t have a straight odor and doesn’t cause allergies. With this best organic lawn fertilizer, the roots of the grass will be strong and it will be growing much faster and won’t burn in summer. So, make your mind and give a preference to the best organic lawn fertilizer as it is eco-friendly and result-oriented.
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