Organic Fertilizer

Best Organic Fertilizer

Did you know that majority of the nutrients in your food originated from the soil? Yes, you heard it right. The nutrients of the vegetables and crops we consume are highly dependent on the soil’s condition.

When the soil does not have enough nutrients, we need organic fertilizers to augment this deficiency. The reason why an organic fertilizer is better than a synthetic one is that the former provides plants with the needed secondary and micronutrients.

So, how does an organic fertilizer work? And what are the things we should look at when choosing an organic fertilizer? Read along to know more.

Read our Best Organic Fertilizer Review to find out.

Burpee Organic Bone Meal Fertilizer, 3 lb (1 Pack)

Burpee Organic Bone Meal Fertilizer, 3 lb (1 Pack)

This is a powder-based fertilizer that contains organic phosphorus, nitrogen, and calcium which are the key nutrients for your plant’s growth. Phosphorus and nitrogen play an important role in converting the energy of the sun into essential plant compounds. Calcium is also important in the plant’s cell wall deposition and maintaining the soil’s chemical balance.

You may apply this fertilizer any time before the harvest. The fertilizer enhances the growth of your plant’s roots, making its blooms more vibrant and allowing more delicious produce of fruits and vegetables. The earlier you apply it, the greater the results will be.

This type of fertilizer is ideal for fall bulbs and root crops but can still work well for other varieties of vegetables. It is also perfect for bedding plants to improve the aesthetics of your garden and patio containers. It is certified by the OMRI (Organic Materials Review Institute) which means that the product is certified and approved for organic gardening applications.

Many have found this fertilizer to be effective especially when consistently applying it all throughout the year. They are found to work great for tomatoes! Not only do they enhance their growth but it truly enhances the taste of the produce. The smell of the powder is unpleasant, but it works like a charm.


  • Easy to apply
  • Very effective for most types of crops, flowers, and even trees
  • Enhances roots development
  • Contains all NPK nutrients


  • Noticeable effects may be observed for a few months up to a year
  • Smells unpleasant
  • One pack may not be enough for continuous use
  • Might attract pets like dogs
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Milorganite 32 lb. Slow-Release Nitrogen Fertilizer

Milorganite 32 lb. Slow-Release Nitrogen Fertilizer

If you’re looking for a fertilizer that can enrich your lawns, making them greener and more abundant than ever, this might be of good use. This fertilizer contains “slow-release” nitrogen that feeds your plants or trees for up to 10 weeks. This formula is specifically designed so you will not have to mow and water frequently. The fertilizer settles and remains in the root zones, enhancing its growth effectively.

The best time to apply this fertilizer is during growing seasons. Another factor that could affect the speed of its effectiveness is the right amount of water and sunlight. Visible results may take months or a year but it’s worth the wait. The majority of the users have given thumbs up because it has really made their lawn and garden grass greener and thicker.

Although it is very effective, it is a bit pricey. For a basic-sized garden, you would need to purchase about three bags. Some users who purchase it tend to apply it in volumes less than the standard just so the product can last for a year or two.

Perhaps one negative side of it is its stinky smell so when you use it, avoid in direct contact with your nose.


  • Makes your grass greener and thicker
  • Nitrogen “sits” on root zones for lesser applications


  • Very stinky smell
  • Expensive compared to other fertilizers
  • Doesn’t have the other essential soil and plant micronutrients
  • Significant results may take months or a year
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Down To Earth Organic Feather Meal 12-0-0, 50 lbs

Down To Earth Organic Feather Meal 12-0-0, 50 lbs

This brand of fertilizer is also rich in nitrogen and is slow-releasing, which makes it a perfect enhancer for leafy-green vegetables and crops. To get the best results, you must apply this to the soil before planting. This will allow the fertilizer to establish nitrogen support in the soil for optimal plant growth. This is perfect for heavy feeders like tomatoes and corn.

Aside from Nitrogen, it also contains other nutrients like Phosphorus and Potassium which are also valuable for the plant’s development. It is also certified by OMRI so it is safe for organic use.

This feather meal is not just a fertilizer but it works as a pest and deer repellant, making your plants safe from these creatures. Fertilizers could really bring the best out of our plants and crops but our efforts will be useless if the output will be destroyed.

Be careful also that you don’t go beyond the standard dose as it can cause your plants to become overgrown. Remember that this fertilizer is to be applied to the soil and not on the leaves. The slow-release nitrogen works with the soil components, influencing plant growth.

The fertilizer is priced decently, so it won’t be a big financial burden.


  • Decent price
  • Very effective to keep plants green and healthy
  • Listed by OMRI as organic
  • Works as a repellant against pests and deer


  • Bad-smelling
  • An overdose could cause plant overgrowth
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Advanced Nutrients Iguana Juice Grow Organic Fertilizer, 1L

Advanced Nutrients Iguana Juice Grow Organic Fertilizer, 1L

This is a promising fertilizer when it comes to maximizing crop growth and promoting abundant organic harvest. Being 100% Organic OIM (Organic Input Material) Certified, all of the ingredients used in the fertilizer are not synthetic but purely organic. Having this certification is really something you need to consider since the crops or vegetables are for human consumption. We need to be assured that it is safe since our health could be affected.

The methodology of applying this fertilizer is pretty straightforward because it is only one part. Just simply check the label rate for that specific week and apply it directly, with no complicated measurement ratios.

The company offers a 100% money-back guarantee for this product, so in the event you won’t get truly satisfied with it, you can return the unused portion along with the original sales receipt. So, you can simply try this product if it works, if not you can get your money back.

For growers who do not want to go through the hassle of mixing fertilizer ingredients, this might be the thing for you. Overall, this is a great product. In terms of storage, however, you must be careful that you store it at a cool temperature in order to preserve its quality.


  • The one-part liquid mixture makes it easy to apply
  • Ingredients contain nitrogen, potassium phosphorus, and micronutrients
  • With a money-back guarantee if not satisfied with the results


  • Needs to be placed in cool storage to preserve the liquid formula
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Espoma EOFW30 Organic Fall Fertilizer, 30-Pound

Espoma EOFW30 Organic Fall Fertilizer, 30-Pound

This amazing fertilizer is derived from feather meal, sulfate of potash, and poultry manure. It primarily contains Potassium which helps your lawn to recover from the heat of summer, bringing fresh green leaves. It doesn’t burn nor leach out your soil and gives your garden the long-term nutrition it needs.

A single 30-pound pack can already be applied to an area of up to 5,000 square feet so you won’t have to do frequent applications. The price is very affordable, so this might be a great deal for those who are on a budget.

What’s great about this fertilizer is that it is completely safe for kids and pets. Other fertilizers pose a hazard that could be harmful when inhaled or when in contact. With this fertilizer, you won’t have to worry about your dog getting sick or whatsoever. The substances contained in this fertilizer is not only safe for human but environment-friendly as well.

After application, you have to wait for about 72 hours or less for the fertilizer to be fully absorbed evenly. Since this fertilizer is granulated, you may spread via a broadcast spreader.

The product may be a bit expensive, but if you are willing to spend a few more bucks for a greener lawn, why not.


  • Safe for kids and pets
  • Does not harm the environment
  • Can be stored in normal room temperature


  • A little bit expensive
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Things to Consider for Choosing Organic Fertilizer

Organic Fertilizer

Why Organic is Better than Synthetic?

Organic fertilizers are those that are extracted naturally from plant-based materials and animal by-products. Synthetic or inorganic fertilizers on the other hand are man-made fertilizers that are commonly derived from minerals, gases, and other inorganic materials. Organic fertilizers are obviously a better option in a number of aspects as shown below.

Soil Health

As mentioned earlier, healthy soil is key to having a nutritious crop yield. Organic fertilizers do an excellent job of improving soil structure and its capacity to store water and nutrients.

They break down and release nutrients and microorganisms to your soil as they decompose. The improved quality and texture of the soil will enhance the plant’s overall health. The water retention of the soil will also be greatly improved over time.

Reaction Time

Organic fertilizers work by slowly releasing the nutrients to the soil to avoid overfertilization which harms your plants. Since the nutrients are in their natural state, it consumes more time, considering also other factors like warmth, moisture, and the weather.

Synthetic fertilizers are often in fast-acting formulas which immediately provides the nutrients to the plants and stimulate their growth rapidly. You would need frequent application since it is consumed faster. Aside from this, the quick nutrient buildup can lead to plant death.

Environmental Impact

In everything we do, we should look at what it can do to the environment. Organic fertilizers are generally safe to the environment and are considered biodegradable, renewable, and sustainable. Since ingredients are naturally made with minimal processing, zero chemicals are involved which means good news for mother earth.

Inorganic fertilizers come from inorganic matter and undergo heavy processing to arrive at a specific ratio of nutrients. The processing itself poses harm to our environment because of the chemical add-ons and increased consumption of water. Frequent use of these fertilizers will result in an accumulation of toxic chemicals in the earth which will eventually result in long-term damage.

What to Look for in an Organic Fertilizer

Before we look around for different brands of organic fertilizers, it is important to know what are the essential nutrients and micronutrients needed for your soil.

The six main nutrients that the soil needs are carbon, hydrogen, oxygen, nitrogen, phosphorus, and potassium. The first three nutrients are produced naturally from the environment through air and water. For the other three nutrients, normally given the acronym NPK, they will depend on the soil’s existing soil nutrients. If deficient, this is where an organic fertilizer comes in. 

Primary Nutrients


This nutrient is considered one of the most important nutrients because it helps in the production of new plant tissues. Nitrogen is a component of chlorophyll and is the agent responsible for giving the plants their green color. Plants need nitrogen for enhancing flower and fruit quality.


This function of this nutrient cannot be shouldered by any other nutrient. It plays a crucial role in the optimal growth and reproduction of your plant. Phosphorus also contributes to photosynthesis, energy transfer, sugar transformation, and nutrient movement.


Potassium is an indispensable nutrient for the survival of plants. It aids in photosynthesis and in efficiently managing the opening and closing of stomata for light regulation.

Secondary Nutrients

Aside from the primary nutrients, these nutrients also beneficial the growth of plants:


Plants need this nutrient for their cell membranes and to neutralize the effect of toxic materials. Furthermore, a good amount of calcium can improve the structure of the soil and helps in binding both organic and inorganic substances together. It is also responsible for activating enzymes and the coordination of cellular activities.


Magnesium is a fundamental component of chlorophyll. It acts as a carrier of phosphorus in the plant and is important for phosphate metabolism. It also plays an active role in protein formation, cell division, and activating different enzyme systems.


Although it is needed in small amounts, the absence of sulfur will have a detrimental effect on your soil. These nutrients condition your soil by reducing its sodium content. They are a key component of certain vitamins and enhances the flavor of onions, mustard, and garlic. Generally, the soil is deficient and sulfur and this is where an organic fertilizer will do its job.


To fully boost the overall health of the soil, the following micronutrients are needed in tiny amounts:

  • Copper
  • Iron
  • Boron
  • Molybdenum
  • Zinc
  • Chlorine
  • Manganese

The abovementioned nutrients – primary, secondary, and micronutrients – all play a crucial role in making your soil health and consequently enhancing your plant’s growth. Take note of these nutrients and make sure that the organic fertilizers you will buy contain a well-balanced composition of these nutrients.


All of the organic fertilizers have their own share of strengths and weaknesses. However, the clear winner of this close battle would be Burpee Organic Bone Meal Fertilizer. It is an excellent source of all the major NPK nutrients, namely Nitrogen, Phosphorus, and Potassium. What’s convenient is that it comes with a 3-lb packaging that allows you to purchase based on what your current lawn area.

Next in line would be the Milorganite 32 lb. Slow-Release Nitrogen Fertilizer. It primarily contains slow-release nitrogen and comes with a large packaging that would be a value for money.

The first runner-up would be a tie between Down To Earth Organic Feather Meal Fertilizer Mix and Espoma EOFW30 Organic Fall Fertilizer since both are still powder-based and easy to apply. Last on the list, but definitely not the least, would be Advanced Nutrients Iguana Juice Grow Organic Fertilizer because of its liquid form. Although it is easy to apply, it is prone to wastage, and once opened, you need to close it properly.

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