Best Fertilizer For Tomatoes
Home » Top 7 Best Organic Fertilizer For Tomatoes (2021 Review)

Top 7 Best Organic Fertilizer For Tomatoes (2021 Review)

If you have a vegetable garden at your home, then you will need to understand the importance of having the best organic fertilizer for tomatoes. Tomatoes grown at home with organic resources are the best. Not only do they ensure a healthier and safer diet, but they also provide an exciting experience. They grow at different stages, and different stages have different requirements.

Top 7 Best Fertilizer For Tomatoes As a gardener, it is vital for you to choose an organic fertilizer that matches the nitrogen, phosphate, and potassium, along with the macro-nutrients needs of your tomatoes.

#1 Organic Fertilizer For Tomatoes

AgroThrive Organic Fertilizer For Tomatoes

AgroThrive Organic Fertilizer For Tomatoes

If you have specific quantity needs for fertilizer, then this organic liquid fertilizer will work really well for you. With its 3-3-2 components ratio, the fertilizer will provide the soil with healthy amounts of nitrogen and phosphorus that ensures healthy growth for the tomatoes.

In addition to this, the fertilizer is an organic one and is, therefore, non-toxic. You can be environmentally responsible while also having the best treatment being given to your plants.
Furthermore, it is also a safe and reliable fertilizer since it is listed by three international standards, which include OMRI and CDFA. The fertilizer can also be used on other vegetables and fruits in your garden, considering that it is a general-purpose one.

You get to choose between 1 gallon, 2.5 gallons, 32 ounces and 64 ounces of liquid fertilizer. This makes the fertilizer suitable for all buyers and users. The application and preparation of the fertilizer are also truly convenient. You simply need to mix it with water and easily apply it to the soil.
Top Features

  • Available in a variety of 4 sizes.
  • It is an OMRI and CDFA listed fertilizer.
  • It is a general-purpose 3-3-2 fertilizer.


  • Liquid form only needs to be mixed with water.
  • Uses natural resources like fish and grain.
  • Available in a range of quantities.
  • Shows effective results in 5 to 7 days.


  • Container can be difficult to use during application.

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Types of Fertilizers For Tomatoes

There is not just any one kind of fertilizer available. The broad range of fertilizer types is organic and inorganic. The range of inorganic fertilizers includes nitrogen, phosphate, and potassium fertilizers.

Organic Fertilizers For Organic Tomatoes

These are the best organic liquid fertilizers for tomatoes available in the market. However, it is important that you first understand what organic fertilizers are.

As their name suggests, these fertilizer for pumpkins are made from natural resources and materials. The most commonly known resources of organic fertilizers are manure, compost, and animal dung. What makes these fertilizers different from inorganic is that since these are naturally made, and the composition or the amount of nutrients in these is never specific nor certain. Most organic fertilizers come with estimated labels on their packaging.

These fertilizers work by providing carbonic material to the plants when they are applied to the soil. The benefit of using these is that they are non-toxic, natural, and are able to increase microorganism reproduction.

Some common sources of organic waste are agricultural waste, such as straws and bean pulp. Meanwhile, animal dung or livestock manure is also a rich source of nutrients. However, it is important to treat them and compost them before application.

Nitrogen Fertilizers for Organic Tomatoes

Nitrogen is a nutrient that is responsible for the healthy growth of a plant. When it comes to tomatoes, nitrogen is most needed when the plant is still growing. This is particularly during the seedling stage after the seeds have been sown (read more about chemical fertilizers).

Phosphate Fertilizers for Organic Tomatoes

Phosphorus is needed by plants on every stage of their life. The main function of phosphorus is to enhance the strength of the root system, the stems, and the overall strength of the plant.

Potassium Fertilizers for Organic Tomatoes

Potassium is a must-have nutrient for growth and particularly photosynthesis. If your plant ever runs short on other nutrients, this fertilizer will help. The immunity of plants to diseases is also guaranteed by potassium.


Fertilization Guidelines

The Best Organic Fertilizer For Tomatoes

The top best product [hide]

AgroThrive Organic Fertilize For Tomatoes

AgroThrive Organic Fertilize For Tomatoes
AngroThrive's organic fertilizer with its liquid form and easy to use application makes it stand out in the market. This is one of the best-selling and best performing fertilizers that comes in a variety of sizes. The size options let you choose the one that best matches your usage and need. Moreover, the fertilizer is also very easy to use as it only requires you to mix it with water, and then it’s ready to be applied. The fertilizer is also incredible in terms of safety of use as it meets all international standards and is listed by CDFA and OMRI. Also, you will be interested in knowing that the fertilizer shows effective results in only 5 to 7 days!
Technical Specifications:
You can get the container in 1 gallon or 2.5 gallons, 32 or 64 oz.
The fertilizer is in liquid form.
It is a water-based, general-purpose fertilizer.
Easy to use, only needs mixing with water.
Shows great results in a week.
Availability of quantity options.
Naturally made organic fertilizer.
Improves plant’s resistance to diseases.
Container is inconvenient during application.

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Organic 5 Tomato, Vegetable & Herb Fertilizer

Organic 5 Tomato, Vegetable & Herb Fertilizer
The Dr.Earth fertilizer is an OMRI listed fertilizer that comes in a pack of 4 pounds. You can get either 2 or 4 packs together, depending on your needs and usage. Also, the fertilizer is made with 100% natural resources and herbs, which makes it healthy and safe for use with vegetable and fruit plants. The components of this fertilizer are in the ratio of 4-6-3, which means that phosphorus is highest in quantity. This will ensure that the roots of your plants grow well and dense, providing more strength to the plant to bear the fruit. If your tomatoes are growing slower than they are supposed to, this fertilizer will help make the growth more rigorous. Overall, with OMRI listing and convenient packaging and size options, this fertilizer is one of the best in the market.
Technical Specifications:
Comes in packs of either 2 or 4 pounds.
It is an OMRI listed product.
Particularly targets root and crop growth.
Environmentally safe.
Offer 2 or 4 pack choice.
Highly suitable for enhancing the tomatoes’ growth.
Large quantity feeds 60 square feet of a field.
Not liquid, the application can be difficult.
Not CDFA listed.

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Organic Blood Meal 50lb Bag

Organic Blood Meal 50lb Bag
For people who have soil lacking nitrogen, this fertilizer with its 13-1-0 components ratio is the ideal choice. The high nitrogen ratio will ensure that your tomatoes grow on their time, and the plant has a healthy growth. Moreover, the bloodmeal components of this fertilizer are meant to solve all your problems that are caused by the unwanted animals disturbing your garden. The bloodmeal composition has a strong odor that keeps the animals away. So, if you face a lot of animals making your garden a mess and damaging your plants, this fertilizer is the right choice. However, we strongly recommend that you use this fertilizer with a mask or something similar to protect you from the strong smell. In addition to this, the fertilizer is strong and powerful but made with organic resources, ensuring that it also remains eco-friendly.
Technical Specifications:
The composition labeling is 13-1-0.
The pack measures 50 grams in quantity.
Composes of bloodmeal that keeps animals away.
Helps keep rabbits and other animals away.
Requires a small amount or 2-3 ounces per plant for effective results.
Eco-friendlier option.
Slow-release nitrogen, good for soil with low nitrogen.
Bad smell.

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EB Stone Organic Tomato and Vegetable Food

EB Stone Organic Tomato and Vegetable Food
Made especially for tomatoes and vegetable gardens, this EB stone fertilizer is a budget-friendly yet a powerful fertilizer. Made with organic resources, this fertilizer also contains a good amount of calcium. This makes it a great fertilizer in terms of the variety of nutrients it will provide to your garden. Moreover, it also has a higher ratio of phosphorus, which is particularly great for all stages of the tomatoes’ lifecycle. The only possible drawback we see to this product is that it only comes in one size.
Technical Specifications:
Each pack of this organic fertilizer is 4 pounds.
The composition labeling is 4-5-3.
The fertilizer also contains calcium.
Great for all sorts of vegetables and fruits.
Extra amount of phosphorus ensuring healthy growth.
Great for use on strawberries.
Highly affordable and budget-friendly.
Comes in only one size.

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OceanSolution Liquid Organic Fertilizer For Tomatoes

OceanSolution Liquid Organic Fertilizer For Tomatoes
A solid, easy to use, and store container for a liquid fertilizer is a necessary feature. For this reason, this OceanSolution liquid fertilizer is one of the best. It has a nutrition composition of 2-0-3, so if you need to add more potassium to your plants for better photosynthesis and protection from diseases, this is the go-to fertilizer for you. Also, the remarkable fertilizer comes with a total of 90 nutrients, macro, and micro, along with trace and ultra-trace nutrients that will guarantee that your tomatoes get the care they need. The organic liquid fertilizer is also easy to apply. Its non-toxic nature makes it safe for use in houses and gardens where you have kids and pets. Overall, it’s a great choice of fertilizer for use in homes.
Technical Specifications:
Nutrition composition is 2-0-3.
The fertilizer provides all 90 macro-nutrients.
This is a liquid form of organic fertilizer.
Safe for environment, pets, and kids.
Easy application with an efficient container.
Helps the restoration of nutrients in the soil.
Provides all 90 macro, micro, and ultra-trace nutrients.
Only one size available.

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Organic Neem Bliss

Organic Neem Bliss
As a gardening lover, you must be knowing the benefits neem oil has for vegetable gardens. It acts as a pesticide and also protects your soil and plants for fungus. This is the reason why this organic neem bliss fertilizer is on our list of best fertilizers. It’s made with 100% neem oil, which will ensure healthy and safe growth for your tomatoes. In addition, the fertilizer is also OMRI listed, which makes it a more reliable and safer choice. Its biodegradable nature ensures that you remain environmentally-friendly while using it, and also makes it an ideal choice for those with kids and pets around. The only problem is that the fertilizer is available in only one size. Other than that, the overall functionality and usage of this fertilizer are outstanding.
Technical Specifications:
The liquid fertilizer is available in 64 oz.
It can be used indoors and outdoors both.
Non-toxic fertilizer made with 100% neem oil.
Listed by OMRI for organic use.
Nontoxic and safe for the environment.
Made with only 100% natural neem oil.
Biodegradable nature.
Safe for pets and kids.
No other sizes are available.

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Nutri-Rich 4-3-2 Organic Fertilize For Tomatoes

Nutri-Rich 4-3-2 Organic Fertilize For Tomatoes
The pH levels of your soil will definitely impact the growth, taste, and the overall look of your tomatoes. For this reason, calcium is one of the many important nutrients that your tomatoes must receive. Hence, this Nutri-Rich organic fertilizer is your best choice. It consists of 7% calcium that neutralizes the soil and ensures a good growing environment for your tomatoes. In addition to this, it also has higher nitrogen levels, which makes it a good choice of fertilizer to be used during the fruit setting days or the end of the season. If your soil is tested and is acidic or has low nitrogen, this fertilizer will solve the problem for you in no time. What also makes this a great choice for all gardeners is that it is an all-purpose fertilizer, ensuring that you get to use it on other plants and occasions too.
Technical Specifications:
It contains 7% calcium.
It’s an all-purpose fertilizer for gardens and plants.
Nutrients composition is 4-3-2.
Large quantity of 20 lbs.
Easy application only needs water after use.
Also comes with calcium for better plant growth.
Weed and dirt free.
Large 20 lbs. is the only size available.
Not ODRI listed.

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Fertilizer For Tomatoes – Buying Guide

When you are searching through the market to find the right kind of fertilizer for your tomatoes, make sure to go through the following factors and considerations.

All inorganic fertilizers come with a rating such as 10-8-10. This label specifically signifies the quantity of each nutrient in the fertilizer, nitrogen, phosphorus, and potassium (NPK). If you are buying an inorganic fertilizer, make sure to first get your soil tested and see what nutrient is most needed. Also, you should see what stage your plant is on.


Fertilizers, especially inorganic ones, are known for their toxic qualities. They can be harmful to you, the environment, and other living creatures around the plant. Many people recommend the use of masks and eye protection when applying fertilizers for strawberries. However, a better thing to take care of here is to see whether or not the fertilizer is eco-friendly. In these terms, organic fertilizers for tomatoes are the best.

Ease of Application

The fertilizer for tomatoes should be easy to use and apply. Liquid fertilizers seem to be more convenient as they come in spray bottles and are, therefore, easy to evenly spread through the soil. In comparison, solid organic fertilizers are slightly difficult to apply.


Make sure that the quantity of fertilizer you are buying meets the needs of your plant. The fertilizer, if less in quantity, will need you to make a re-purchase and therefore add on to your costs. Also, buying too much of extra fertilizer will also lead to a waste of money.

Buyer Feedbacks

If you want to see whether or not the fertilizer you are buying is useful and will do its job well, you should use authentic customer reviews. People who are just as enthusiastic about gardening and who have used the product will be able to share their experience so you can decide whether or not the fertilizer is right for you.

When Should I Start Using Fertilizer for Tomatoes?

Many people think that they should start using fertilizers right at the first stage of their plant’s growth. It is important to remember that when you sow the seeds in the soil, the basic nutrients are provided to the soil by the seed itself. Therefore, at this very stage, there is no need for fertilizer.

However, some people’s soil is low in nitrogen, which may lead to slower growth of the seedling as it starts to germinate and turn into a plant and reach the flowering season. If you want to see more flowers and want a good and healthy growth, then apply nitrogen in the initial stages (after the seeds start to germinate). However, over-feeding your plant with nitrogen can be harmful.

Phosphorus is needed by the plant at every stage. Therefore, keep supplying your plant with phosphorus fertilizer from the initial flowering stages to the end of the cycle when the fruit is ready.

Potassium fertilizers can be added during the flowering stage. They need to be double in quantity of nitrogen.

How Often Do Tomatoes Need Fertilizers?

Before you can apply nitrogen to your soil, it is important to get the soil tested to see if there is already enough nitrogen. This is because if you apply too much nitrogen, the plant will be too leafy and will see very fewer flowers.

Once you test the soil and see if there is any need for nitrogen, you should apply the fertilizer every week, twice or thrice. When the fruit starts to ripe, the fertilizer amount should go down to once or twice maximum every week. When the fruit is set, don’t use too much nitrogen as that may make your tomatoes more green than red. Use phosphorus at this stage more than nitrogen.


Planting and Care for Tomatoes

Fertilizer For Tomatoes - FAQs

Why do tomatoes need nitrogen?

Nitrogen is one of the primary, major nutrients that a tomato plant needs. It helps in the production of chlorophyll, which is a major component of photosynthesis. Tomato plants don’t make nitrogen themselves, so they need external addition of the nutrient.

What are organic and inorganic fertilizers?

Organic fertilizers are made with organic or natural sources such as animal dung and industrial waste. Meanwhile, inorganic fertilizers are made with synthetic chemical compounds.

Are liquid fertilizers better?

The nutrients provided by any form of fertilizer is the same. However, when it comes to application, liquid fertilizers provide more consistent nutrients throughout the soil.

How many forms of fertilizers are there?

There are granular, powder, and liquid forms.

When do tomatoes need fertilizer the most?

Even though fertilizers need to be applied at the initial stages, the frequency of fertilizer application increases the most when the plant is ready to set with a fruit.

AgroThrive Organic Fertilizer

We have picked the AgroThrive as the top pick. The fertilizer is an all-purpose product that meets the needs of all gardeners. If you have other vegetable and fruit plants in your garden, then this liquid organic fertilizer is the one for you. It is an OMRI, CDFA listed fertilizer that further makes it a good choice. You can also choose the appropriate size of the container that perfectly matches your needs.

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In conclusion, it is important to learn the most about your plant’s needs. Without understanding what stage your tomatoes are on, you will not be able to find the right fertilizer. Organic fertilizers are always much better and safer than inorganic ones. We recommend to always check the nutrients ratio and the quantity of the fertilizer.

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