Best Organic Fertilizer

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Plants need fertilizer, but finding good fertilizer is easier said than done, especially if you’re looking for a fertilizer that is free of inorganic materials. We dropped down options for you to choose which is the best organic fertilizer you can try.

However, there are some excellent options, which we will look at. So let’s get to it and take a look at the top ten contenders for the best organic fertilizer.


Comparison Chart

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Jobe’s Organics 09524 Purpose Granular Fertilizer, 16 lb
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FoxFarm FX14059 FoxFarm Happy Frog Tomato and Vegetable Fertilizer
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AgroThrive Fruit and Flower Organic Liquid Fertilizer – 3-3-5 NPK (ATFF1128) (1 Gal) for Fruits, Flowers, Vegetables, Greenhouses and Herbs
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Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag
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Neptune’s Harvest Organic Hydrolized Fish & Seaweed Fertilizer 36 0z
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Espoma 8 Ounce Concentrated Organic Indoor Plant Food – Indoor Plant Fertilizer For Large & Small Plants Like Pothos, Fiddle Leaf Fig, Monstera, Snake & Palms – Pack of 2
Down to Earth Organic All Purpose Fertilizer Mix 4-6-2, 5 lb
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ALL BIO – Organic Plant Food – Vegetable and Edible Greens Nutrients/Biostimulants for Indoor House Plants and Outdoor Plants/Mixed in Water/Foliar Spray. Covers Approx. 1,800 sq.ft (10g)
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Joyful Dirt Premium Concentrated All Purpose Organic Based Plant Food and Fertilizer. Easy Use Shaker (3 oz)
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Organic Liquid Seaweed and Kelp Fertilizer Supplement by Bloom City, Quart (32 oz) Concentrated Makes 180 Gallons

Jobe’s Organics 09524 Purpose Granular Fertilizer

51MwJOk8CML. SL500

This is an excellent multi-use fertilizer that can be used for many purposes. It’s ideal for growing vegetables, fruits, flowers, and more.


This all-purpose fertilizer contains a balanced NPK (nitrogen, potassium, phosphorus) ratio of 4, 4, 4. Keep in mind that this is a granule fertilizer. Mix it in with the soil when you plant your plants. You can also dissolve it in water and use it as a watering supplement. This should help your plants grow a lot of foliage and blooms.

In addition, this fertilizer is OMRI listed for organic gardening by the USDA. So it is certified organic and contains no synthetic chemicals. On a side note, this fertilizer also contains beneficial microbes that help your soil resist disease, insects, and drought.

Keep in mind that this is a granular fertilizer. Mix it with the soil when you plant your plants, or you can dissolve it in water and use it as a watering supplement.

You can choose from various bag sizes ranging from 1.5-16 pounds. Moreover, this fertilizer is relatively cost-effective.

However, there are more specific fertilizers from this brand, such as fertilizers explicitly designed for berries, herbs, flowers, roses, tomatoes, and vegetables, as well as annuals and perennials.


  • Natural and organic
  • Ideal for all purposes
  • It can be used in a variety of ways
  • Easy pour bag
  • Cost-effective
  • Safe for use around kids and pets


  • Very strong odor

FoxFarm FX14059 FoxFarm Happy Frog Tomato and Vegetable Fertilizer

41m+QBH16 L. SL500

As you can tell by its name, this is an organic fertilizer designed for vegetables and tomatoes. It comprises many natural ingredients that will allow your tomatoes and vegetables to grow big and healthy.


This fertilizer contains over 20 beneficial microbe species that help convert the fertilizer into food that your plant can consume. In addition, these microbes can help protect against drought, pests, and disease.

In addition, this FoxFarm fertilizer contains various organic ingredients such as kelp meal, alfalfa meal, fish meal, and bat guano. Therefore, you can rest assured that all components are natural and safe to use for your edible garden. Another benefit is that it contains humic acid, promoting rapid seed germination and allowing plant roots to quickly intake nutrients.

It is also pH balanced, and the NPK ratio is 5-7-3. So this should be ideal for foliage growth and fruit and vegetable flowering.


  • pH balanced
  • Excellent NPK ratio for tomatoes and veg
  • Natural and organic ingredients
  • Contains beneficial microbes
  • Very easy to use


  • Not very cost-effective

AgroThrive Fruit and Flower Organic Liquid Fertilizer

41bgDYFYynL. SL500

If you are looking for a simple liquid organic fertilizer designed for flowering fruits and plants, this is probably it. This product is intended for flowers, vegetables, fruits, and herbs.


This fertilizer contains a fairly balanced 3-3-5. NPK ratio. It has various beneficial ingredients, including grain, organic fish, and more. All ingredients here are 100% natural and organic to ensure 100% safety. It is a safe product to use around pets and kids.

In addition, this product contains 70% fast- and 30% slow-releasing ingredients. This means that your plants get a quick boost of nutrients, and nutrients over a prolonged period, so you don’t need to fertilize your plants as often. This is a liquid fertilizer, so you can easily mix it with water.


  • Easy-to-use liquid fertilizer
  • Great for anything that blooms
  • Slow and fast releasing ingredients
  • Balanced NPK ratio
  • Doesn’t smell bad


  • Easy to use too much – can burn your plants

Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer

51OVz6TDz0L. SL500

This Dr. Earth Organic product is an excellent choice if you need an organic fertilizer for vegetables, herbs, tomatoes, and fruits.


This Dr. Earth fertilizer is made with organic and natural ingredients. It contains no chicken manure, sewage sludge, or genetically modified organisms. Everything is 100% natural and safe. It is therefore ideal to use on any plants that produce edibles.

Moreover, it also contains a balanced NPK ratio for flowering plants. It has a bit of nitrogen for foliage growth but more phosphorus and potassium for blooms and flowering. This fertilizer is well known for producing big blooms and larger and tastier fruits and vegetables.

Another benefit of this fertilizer is that it comes with seven different champion strains of beneficial soil microbes designed to allow your plants to quickly break down the fertilizer into nutrients they need to grow. These microbes also help to prevent pests and diseases from taking hold.

Simply mix this fertilizer with the soil when you plant your garden. You can also dissolve the granules in water and use it as a supplement when you water.


  • 100% organic
  • No toxic chemicals
  • Ideal for big blooms
  • Contains beneficial microbes
  • Easy to use


  • Listed amount of humic acid is not correct

Neptune’s Harvest Organic Hydrolized Fish & Seaweed Fertilizer

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This fertilizer is good for the beginning stages of vegetable plant growth.


The most important thing to note is that the NPK ratio is 2, 3, 1, which is relatively low. Therefore, it doesn’t contain many nutrients as other products we have reviewed. In addition, it is made of a combination of fishmeal and seaweed.

However, it is very well-balanced and will provide your plants with a good mix of foliage growth and bloom. Furthermore, this product is ideal for the beginning stages of plant growth.

This is an excellent fertilizer to use if you have soil that already contains a good deal of nutrients. This product won’t provide your plants with a full dose of nutrients, but it is a good supplement.

This is a liquid fertilizer, so you just have to mix it with water and apply it to the soil.


  • Just mix with water and apply
  • Ideal for new plants
  • Ideal if you have nutrient-rich soil
  • 100% natural and organic
  • Made with fish and seaweed


  • Bit of a strange odor

Espoma 8 Ounce Concentrated Organic Indoor Plant Food

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This natural plant fertilizer is designed for indoor house plants but not fruits or vegetables. However, it does work wonders for house plants.


This product is 100% natural and organic. It contains absolutely no man-made or synthetic chemicals and nothing toxic, and it is safe to use around pets and children. This product is very easy to use; simply mix one-half cap of this product with a quart of water and then drench the soil of your plants. For the best results, use it once every two to four weeks.

This product also contains a relatively balanced ratio of NPK nutrients. This mix is designed both for foliage growth and for big blooms. In addition, there are a variety of natural microbes intended to help your plant absorb nutrients faster. These microbes help prevent pests and fungal infestations from taking hold in your plants.


  • Very easy to use
  • Lasts a long time
  • Cost-effective
  • Natural and organic
  • Child and pet safe
  • Good NPK balance


  • Only for houseplants

Down to Earth Organic All-Purpose Fertilizer Mix

This all-natural and safe organic fertilizer comes at a very reasonable price. It is an all-purpose fertilizer you can use for virtually any kind of plant.


This fertilizer’s NPK ratio is 4, 6, and 2, ideal for most purposes. It contains enough nitrogen for a good deal of foliage growth, but not so much that it prevents blooming.

It also contains plenty of phosphorus and a good deal of potassium. These are both important for creating big flower and vegetable blooms. Moreover, it is gentle enough, and your plants won’t get burned.

The ingredients include feather meal, rock phosphate, langbeinite, greensand, blood meal, fish bone meal, and humates, as well as kelp meal.

This product also contains plenty of microbes that allow for good nutrient uptake. These microbes are also ideal for protecting your plants from various infestations.

In addition, this fertilizer is 100% natural and organic. It doesn’t contain any toxic or synthetic materials, and it’s also safe to use around kids and pets.


  • Organic and natural
  • Nothing synthetic or toxic
  • All purposes use
  • Contains beneficial microbes
  • Steady release
  • Fairly balanced NPK ratio


  • Has quite a smell

ALL BIO – Organic Plant Food

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This is a great organic vegetable and plant nutrient used for indoor and outdoor plants. It is certified 100% organic and ecologically safe.


As mentioned, this product is certified 100% organic. It contains absolutely no toxic, synthetic, or man-made ingredients, so it is totally safe for your plants and for all edible fruits and vegetables. On that note, it is also safe for the environment and to use around kids and pets.

The NPK ratio is 2, 1, 1. This means that this fertilizer contains more nitrogen, ideal for the beginning stages of plant growth, especially foliage growth.

That said, this is not the best option if your plants are already flowering; if your plants are flowering, they need more potassium and phosphorus than they do nitrogen.

However, this product is loaded with specifically formulated amino acids for vegetables and edible greens. They allow your edible plants to grow bigger and stronger.

This is a powder fertilizer that you can either mix it with your soil or dissolve in water. Either way, it’s pretty easy to use. On that note, it’s also relatively cost-effective.


  • Easy-to-use powder
  • Ideal for vegetative and foliage growth
  • For all vegetables and edible greens
  • 100% natural and organic
  • Eco friendly and safe around pets and kids


  • The amount you get is very small

Joyful Dirt Premium Concentrated All-Purpose Organic Based Plant Food and Fertilizer

41r3ZnPC8SL. SL500

This easy-to-use plant food contains loads of nutrients and beneficial microbes. It is generally designed for ornamental plants, not vegetable gardens, but it works well for its intended purpose.


This combination of fertilizer and plant food is designed to be used indoors and outdoors. However, it is really intended for leafy plants, but you may also use it for herb gardens.

The NPK ratio is 8-1-5. It contains a good deal of nitrogen, ideal for foliage growth. Therefore, it is not really designed for fruits or vegetables, and it doesn’t have enough phosphorus for big blooms.

However, it contains many other nutrients and microbes that help plants grow quicker, absorb more nutrients, and use less water.

These microbes will help protect your plants against pests and fungal infestations. Simply shake it onto the soil and water it.


  • Ideal for leafy plants
  • Can be used indoors and out
  • Natural and safe
  • Very easy to use
  • Contains beneficial microbes


  • Not the most cost-effective option around

Bloom City Organic Liquid Seaweed and Kelp Fertilizer

4178Dyk48GL. SL500

This Bloom City fertilizer is a seven-species blend of organic seaweed and kelp that can be used for various purposes.


This fertilizer contains many different ingredients that are all-natural. One of the main ingredients is kelp. It does not contain any synthetic, man-made, or toxic ingredients.

It is perfectly safe to use around pets and kids, and it is eco-friendly. In addition, it is safe to use on plants that produce edible fruits and vegetables. Moreover, this product also has a balanced NPK ratio with a good bit of nitrogen but more potassium and phosphorus.

It also features many natural enzymes, hormones, and microbes. These allow for less water usage combined with more nutrient uptake. These also help to protect your plants from infestations. To use it, simply mix the recommended amount with water, and water your plants as needed.


  • Natural and organic
  • Safe for veggies and fruits
  • Packed with microbes and other beneficial ingredients
  • Very easy to use
  • Fairly cost-effective


  • Not the best odor

Buyer’s Guide

Before you shop for organic fertilizer, there are a few essential points to keep in mind.

Types of Organic Fertilizers

There are a few types of organic fertilizers to consider. These include things like manure, bat guano, compost, rock phosphate, chicken manure, bone meal, blood meal, vermicompost, and more. We recommend researching the benefits of the specific types of fertilizer before you buy.

Synthetic vs. Organic Fertilizer

Organic fertilizers often have many secondary micronutrients that synthetic fertilizers do not contain. As a result, they’re generally much safer to use, especially for edible plants. That said, synthetic fertilizers usually contain higher amounts of NPK nutrients. As a result, they can nourish your plants for extended periods.


Look for 100% natural and organic ingredients. There are hundreds of elements that fertilizers can contain, too many to list here. That said, nitrogen, potassium, and phosphorus levels are the three most important things to look for.

Application Method

There are three main application methods. Some have to be mixed with the soil before your plant is planted. Some come in granule or powder form that you place onto the soil and then water. Others come in liquid form that you mix with water. They all work just fine, and it just depends on your needs and preferences.


Of course, you want something that is economically feasible. Pay attention to the ingredients because that’s what matters. You don’t need to spend a fortune to get a good organic fertilizer.


What is Organic Lawn Fertilizer?

Organic lawn fertilizer is any type of lawn fertilizer that contains nitrogen, phosphorus, and potassium. Moreover, these must come from 100% natural sources.

How Do You Use Organic Fertilizer?

There are three ways to use organic fertilizer. You can mix it with your soil, or sprinkle it on the soil and then apply water. You can also mix it with water and apply it directly.

What are the Benefits of Using an Organic Lawn Fertilizer?

The benefit of using organic fertilizer is that you will feed your lawn without causing any environmental or safety issues.

What’s the Difference Between Natural and Organic?

Natural means that it comes from nature and is not synthetic or man-made. Organic means that no pesticides, fungicides, or herbicides were used during the growth of your plants.

Why are Some Organic Grass Fertilizer Products Free of Phosphorus?

Some fertilizers don’t contain phosphorus because they can leak into rivers, lakes, and other water sources. This can lead to big algae blooms and also harm fish.


We recommend Jobe’s Organics 09524 Purpose Granular Fertilizer if you want the best organic fertilizer. It can be used for all plant types; it is safe, natural, and easy to use.

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