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Best Fertilizer for Tomatoes

Best Fertilizer for Tomatoes. How to Feed Your Plant for Ultimate Harvest

This multiplicity of options can put you in a dilemma of finding the best fertilizer for tomatoes. We will be providing you with sufficient information on how to make the right choice of fertilizer.

It is okay if you want a bountiful harvest of tomatoes after the planting and growing seasons are over. But the fact is, fertilizers are what triggers the rapid growth of tomatoes and there are tons of them all over the market.

But before we delve into that, let’s lay some foundations on tomato fertilizer and some facts you should be aware of.

What is Tomato Fertilizer?
The #1 Best Spray For Tomato Plants
The #1 Best Spray For Tomato Plants

A tomato fertilizer can be a synthetic or natural substance that is included in the soil at appropriate times (which you’ll find out in the course of this article) to promote soil fertility and thus the rapid growth of tomatoes.    

  • Chemical Composition of a Tomato Fertilizer

Ideally, a potent fertilizer should contain macronutrients in form of Nitrogen, Phosphorus, and Potassium (N, P, K) and some other micronutrients like calcium, boron, iron, molybdenum, and zinc.

  • Functions of the Macronutrients and Micronutrients Present in the Fertilizer

The macronutrients are needed by the soil in substantial amounts, while the micronutrients provide auxiliary roles in the fertility objective of fertilizers.

For Nitrogen, it is there to facilitate the growth of lush stems and leaves. Phosphorus and potassium are responsible for facilitating the production of fresh fruits in due season, as well as the promotion of photosynthesis and growth of roots. With this in mind, let’s now look at the crux of the article.

What is a Tomato Fertilizer

What are the Best Fertilizers for Tomatoes?

To be honest, I can’t just single out one fertilizer and say “this is the best fertilizer for tomatoes”, it doesn’t work that way. You can identify the best fertilizers for tomatoes by the concentration of their macronutrients.

These macronutrients are Nitrogen, Phosphorus, and Potassium (N-P-K). The best fertilizers should have their concentration in the ratio of 5-10-5 or 5-10-10 and not 10-8-10 as seen in many fertilizers.

Why Nitrogen Should be less

Nitrogen is necessary to promote lush green stems and leaves, but when its concentration becomes excessive, it often leads to the production of longer stems and big leaves, with fewer fruits to account for such mighty foliage.

On the other hand, in soils with Nitrogen, Phosphorus, and Potassium with concentrations in a ratio of 8-32-16,  it can boost the growth of tomatoes.

The Verdict

In essence, the best fertilizers for tomatoes when choosing should have lower concentrations of nitrogen compared to other macronutrients. You need healthier fruits, not longer stems, and leaves.

Best Fertilizer for Tomatoes

1. Miracle-Gro Performance Organics Edibles Plant Nutrition 

  • OMRI listed plant food as suitable for organic gardening
  • Presentation: granules
  • 2.5 lb
  • Organic and natural ingredients
  • You need to reapply every 4-6 weeks
  • You don’t need to mix it with water
  • It is specially formulated for growing tomatoes, vegetables, herbs, and fruits
  •  It is a 9-2-7 fertilizer (Nitrogen-Phosphate-Potash)

2. Espoma Tomato Tone- Tomato and Vegetable Food

  • Prevents blossom end rot
  • 18 lb
  • Natural and organic plant food enhanced with thousands of living microbes and is approved for organic gardening.
  • It is specifically formulated to produce consistently plump, juicy tomatoes
  • A complete plant food with all 15 essential nutrients
  • Long-lasting, slow-release feeding
  • It is a 3-4-6-8-3 (Nitrogen, Phosphate, Potash, Calcium, Sulfur)

3. Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer

  • 4 lb
  • Contains pro-biotic, seven champion strains of beneficial soil microbes plus ecto and endo mycorrhizae
  • OMRI (Organic Material Review Institute), OIM (Organic Input Materials), CCOF (California Certified Organic Farmers), NOP (National Organic Program), and Non-GMO Project Verified the highest level of purity and transparency.
  • Sustainably made in the U.S.A.

4. Jobe’s Tomato Fertilizer Spikes

  • 3.9 oz
  • Made in U.S.A
  • Continuous supply of nutrients below the surface
  • 18 spikes with pre-measured fertilizer
  • 6-18-6 time-release fertilizer for all tomato plants

5. Botanicare Cal-Mag Plus Calcium Magnesium & Iron Plant Supplement

  • 2.2 lb
  • Highly beneficial calcium, magnesium, iron, and trace mineral plant nutrient supplement
  • It helps maximize yields in fruiting and flowering plant varieties like tomatoes
  • This plant supplement prevents blossom end rot in tomatoes
  • It has better results using it together with another fertilizer
  • You will require to adjust the pH
  • Recommended for hydroponics

When to Use Tomato Plant Fertilizers

The most ideal time for the application of tomato fertilizer, are before planting the seeds, and when they are starting to blossom. Meaning, when you start seeing the first fruits, you can apply the fertilizer again. It should be continuous, perhaps fortnightly or weekly until it reaches its harvest time.

What are the Best Fertilizers for Tomatoes

Why You Should Apply Them Before Planting

Nutrients like phosphorus are responsible for the growth of roots as well as fruits. If the roots don’t establish themselves faster and adequately, they can’t lead to the bearing of fruits.

Fertilizer for Tomatoes Options

If you want to ditch the synthetic fertilizers for their organic counterparts, they are sold in the market or you can make yours at home. The chicken, peter rabbit, and hamsters manure can be made at home by dissolving their wastes in water.

These homemade manures should be supplemented with wood ash to boost the supply of phosphorus and potassium. The Epsoma Tomato-Tone and Doctor Earth Organic Fertilizers are available for purchase in the market.

Fertilizing Tomatoes Plants

Prepping the Soil

Before applying fertilizers, you should prep the soil. If you are using soil beds, they should be well made and sprinkled with some other organic matter, especially compost. The compost should be about 30% of the mixture of the total soil.

You can use Wiggle Worm Soil Builder, this compost is OMRI listed, which means this product qualifies as organic under the USDA’s National Organic Program (NOP).

Tomatoes are voracious nutrients consumers, so they need all of it to develop. You should also carry out a soil analysis to ascertain the nutritional value of the soil, in order to know the kind of fertilizer you’ll be using. You need to also water the soil properly before applying any fertilizer.

Why the Preparations?

The preparations will have to be in order because you will have to prepare your soil bed in a way that it will be loose, and not too compact that you can’t pierce your finger through it uninhibited. Loose soils are favorable for the growth of tomatoes.

How to Use Tomato fertilizers

The soil analysis is to help determine the kind of fertilizer that will be suitable for the soil. If the soil is remarkably deficient in Phosphorus and Potassium, then you need an N-P-K fertilizer in the ratio of 5-10-10.

Water the soil continuously prevents a lack of moisture, which is very necessary for its growth.

Using the Fertilizer

After tilling the hole up to about 6’ inches deep, add the natural fertilizer at the base of the hole. If you are using a synthetic one, add a thin layer of soil between the fertilizer to avert root burning.


The best fertilizer for tomatoes can be found in any fertilizing product where the nitrogen composition is minimal, because an excess in nitrogen promotes foliage, at the expense of the growth of each fruit.

Fertilizers are necessary for the growth of plants because most soils aren’t fertile enough to grow them. However, the application process of these fertilizers is of sheer importance, as getting them right, often leads to the right results.

You can, however, opt for organic fertilizers for your tomato production, like The Epsoma Tomato-Tone and Doctor Earth Organic Fertilizer, since the bulk of what we’ve discussed were anchored on synthetic fertilizers.

We will be waiting for you at the comment section to field any questions you may have.


What are the most important nutrients for tomatoes?

There are three primary nutrients needed for the development of healthy tomatoes. The first is potassium, which is needed for strong plant growth. The second is nitrogen, which provides them with energy to build their leaves and fruits. The third is phosphorus, which also helps develop a healthy tomato plant.

What is the best homemade fertilizer for tomatoes?

The best homemade fertilizer for tomatoes will contain an increased amount of nitrogen and phosphorus compared to commercial fertilizers and commonly available compost, as well as a good amount of potassium in order to promote a healthy tomato plant.

Tomato plants don't require much fertilizer, and the best one to use is compost.

There are many different types of homemade fertilizer that can be used to help your tomato plants grow stronger roots and healthier leaves. Some common ingredients in homemade fertilizers include fish emulsion and chicken manure, while others include coffee grounds or even detergent pods.

What does Epsom salt do for tomatoes?

If you want to grow a tomato that is resistant to heat, cold, and disease, then you need to add Epsom salt to the soil.

Epsom salt is a magnesium sulfate which helps tomatoes grow better by improving nutrition and increasing their resistance against diseases. It can be used for a number of things including helping tomatoes preserve flavor during the ripening process

Which type of fertilizer helps tomato plants grow the fastest?

The answer to this question is, in fact, quite simple. Most gardeners are aware that tomatoes are heavy feeders and they need a lot of nutrients to grow at their best. In order to achieve this it is imperative that the soil which they are grown in is as perfect as possible.

The most important thing for a good yield from tomato plants is a well-balanced fertilizer, consisting of nitrogen, phosphorus and potassium, together with other nutrients such as calcium and magnesium.

There are many different types of fertilizers that you can use for your tomato plants, but the type of fertilizer that is best for your plants depends on a number of factors including how much time you have to spend gardening and the type of soil you have around your plant.

Aerobic fertilizer can also be used for tomatoes. Aerobic fertilizers include manure, compost, and chemical fertilizers such as ammonium nitrate or urea. Chemical fertilizers provide nitrogen to help tomatoes grow. Manure provides phosphorus which helps promote flowering and fruiting in tomato plants. Compost provides microbes which help break down organic matter in the soil and make nutrients available for plant uptake.

How much fertilizer do tomato plants need?

One of the most important things that you should know about tomato plants is that they need a lot of fertilizer.

Tomato plants require a lot of nitrogen and potassium. They also need phosphorous, but only in small quantities. Luckily, even if you don't have enough phosphorus for your plants, they'll still do alright as long as you have enough phosphorous and potassium available to them.

Tomatoes plants grow well in soil that has a pH level of 6.5 to 7.5 and need a lot of fertilizer.

The amount of fertilizer needed by tomato plants depends on the type of fertilizer and the soil's pH level. Tomato plants require more nitrogen than other plants, so they need higher levels of fertilizer containing nitrogen, such as ammonium nitrate. The type and composition of the soil also affects how much fertilize you need to give your tomatoes plants. If your soil is acidic (pH lower than 7), you will need to fertilize more because it won't be able to take up nutrients as well as an alkaline (pH higher than 7) soil can do.