10 Best Fertilizer For Tomatoes

If you are planning to grow tomatoes in your backyard, in order for the tomatoes to grow big, grow healthy and produce more tomatoes you must know how and when to fertilize them. Other than that, fertilizers also plays a vital role for growing plants. Tomato plants feeds heavily on the soil where it is being planted, however though, no matter how fertile the soil is you still need the help of a fertilizer. It helps and supports the overall growth of Tomato plant and its fruit development. A healthy and well-nourished plant allows you to harvest a delicious and nutritious tomato fruit. There are different fertilizers in the market nowadays, and choosing the best tomato fertilizer can be challenging. That is why in this guide, we rounded up some of the best fertilizer for Tomatoes.

ProductBrandNamePrice
EspomaTomato-tone Organic Fertilizer - FOR ALL YOUR TOMATOES, 4 lb. bagCheck Price on Amazon
Organic Plant MagicPlant Magic Premium All Purpose Organic Fertilizer Soluble Plant Food Concentrate for AllCheck Price on Amazon
MasterBlendMASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (2.5 Pound Kit)Check Price on Amazon
Miracle-GroMiracle-Gro 2000422 Plant Food, 1.5-Pound (Tomato Fertilizer), 1.5 lbCheck Price on Amazon
Miracle-GroMiracle-Gro Shake 'N Feed Tomato, Fruit & Vegetable Plant Food, Plant Fertilizer, 4.5 lbs.Check Price on Amazon

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Best Fertilizer For Tomatoes

Fertilizers can either be natural organic or chemical. Both can still provide the essential nutrients that plants need for growth.

When and How to Fertilize

Fertilize Tomato Seedlings

If you are starting to plant tomatoes from scratch, say from its seedling it is ideal to fertilize it on the starting soil. That way plants will start off to a brand new start.

Fertilizing during that start is done by adding worm casting to the seed starting mixture when planting, or you can use a slow release fertilizer.


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When Seeds mature (after the 4th week), fertilizing can also be dong when watering the seedlings on a weak mixture of compost tea by adding worm cast casting or liquid fertilizer once a week.

If you are not starting from scratch, tomato seedlings already planted chances are it has already been fertilized. Although it is not a bad idea to give a weaker dosage of fertilizer when you bring it home.

Fertilize Tomatoes when planting

To be able to build and start a strong root, fertilizing tomatoes when planting during the first 4 to 8 weeks on the soil is important. It is recommended to fertilize using a slow-dose fertilizer.

Doing this is pretty simple, all you need to do is to fill the planting holes with a few cups of compost for each of the planting holes you made. Other than add, you can also add 1/4 worm casting to the planting hole for a more long term, but slow-release of nutrients needed for the growing tomatoes.

Fertilize Tomato plants while growing

After transferring the grown plant of tomato, it will take a few weeks to adjust to its new soil (3 to 4 weeks more or less) before you can start to put fertilizer again because fertilizing even before the transplanted plant can adjust can do no good to the growing tomatoes.

When fertilizing growing plants, you need to do it in a slow and low method instead of putting too much fertilizer at once as it can damage and burn the growing plant causing harm to the plants.

To fertilize plant of tomato while growing, you need to use a liquid fertilizer such as a compost and or worm casting tea at least every 14 days. Why liquid? That’s because nutrients are absorbed easier along with the plant roots and leaves when using a liquid tomato fertilizer to fertilize the plant.

However if at some point compost or worm casting is not available, you can use a liquid organic tomato fertilizers and make sure to just use half of what is recommended dose and strength at least every two weeks.

When to stop fertilizing

This is very crucial since fertilizing the plant does not mean fertilizing all throughout, that’s not how it works. So when do you stop fertilizing the plant? When Tomato plants begin to fruit and harvest time is set to start, fertilizing should then be stop.

Fertilizer For Tomatoes

MASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk

A complete combo kit fertilizer bulk from Masterblend. The tomato and vegetables blends are 4-18-38. Although in this type of tomato fertilizer, the amount of nitrogen is not abundant however a nitrate of calcium of about 15.1-0-0 covers up for it.

The tomato fertilizer also contains a small amount of epsom salt that helps in replacing the needed sodium content when the soil was extracted.

Availability of the size includes a 2.5-pound, 5-pound, 12.5-pound, 25-pound and a 62.5-pound package.

Since the packaging is not resealable, you may need to put the remaining fertilizer to an airtight container to maintain its potency.

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Miracle-Gro Water Soluble Tomato Plant Food

A 1.5 pound water soluble Tomato Fertilizer by Miracle -Gro company. It is not only great for tomatoes but for other vegetables as well such as squash, pepper, cucumber and carrots. Considered to be for other plants, and it does not burn not harm the plant only when following instructions.

When using this fertilizer, make sure to feed actively growing plants every 7 to 14 days. To use this using watering cans, mix 1 1/2 tablespoons using the enclosed scoop in 1 1/2 gallons of water. On the other hand, when using miracle gro garden feeder , you need to fill the feeder at the top. Use every 7 to 14 days for best results. Additional information: A 1 1/2 pound feeds can cover around 600 square feet of garden area surrounded by plants and vegetables.

  • Product Dimensions: 3.75 x 3.75 x 5.75 inches
  • Product Weight: 1.54 pounds
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Jobe’s Organics 9026 Fertilizer

An organic tomato fertilizer 9026 fertilizer that comes in 3 different packaging: 1.5 pound pack, 4 pound pack, and 6 pound pack. The package is resealable therefore the fertilizer’s potency is maintained and can still be used for a long time.

Since Jobe’s Company has other fertilizers for plants and flowers, make sure to choose the fertilizer with the label Tomatoes and vegetables to avoid getting the fertilizer for flowers.

The fertilizer can easily be scattered around the roots of the tomato plants since it is granular in nature. It is also fast acting that yields a faster and more productive result of tomato fruits.

Jobe’s Organic Fertilizer is certified to be organic, assurance that the tomato fertilizer does not contain synthetic chemical is guaranteed.

JobeBiozome is added to the fertilizer. This is a potent microorganism that when used it can create a more fertilize soil to improve the soil texture, penetration of water, and as well as the amount of oxygen

The packaging features an easy pour bag with a fertilizer analysis of:

  • 2-5-3 for 1.5 pound bag
  • 2-5-3 for 4 pound bag
  • 2-5-3 for 16 pound bag
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Jobe’s Tomato Fertilizer Spikes

These are Tomato Fertilzer with 18 fertilizer spikes in a single packing by Jobes. The fertilizer premeasured tomato fertilizer spikes that helps nourish the roots of the plants. It is also a time and slow release fertilizer to continuously supply the tomato roots for about 8 weeks of the needed nutrients for optimal growth of tomato plants.

Fertilizer analysis of 6-18-6, The 18 fertilizer spikes are packed in a waterproof resealable package to maintain the potency of the fertilizer.

  • Product Dimensions: 6.3 x 5.1 x 2 inches
  • Item Weight: 4.9 ounces
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Miracle-Gro Shake ‘N Feed Tomato, Fruit & Vegetable Plant Food

Another Tomato Fertilizer by Miracle-Gro. It is made primarily for fruits and vegetables, therefore a suitable fertilizer for tomato plants.

It has essential micronutrients that helps tomato plants grow strong and produce more fruits as compared to other plants that did not receive any tomato fertilizer at all. Since Miracle-Gro Fertilizer contains natural ingredients, microbes in the soil are also treated and fertilized.

A single application of the fertilizer can lasts up to 3 months. There is no need to mix the fertilizer in the soil, you can just easily pour the tomato fertilizer directly to the plant of tomato.

Contains about 5.6% of Calcium that helps plants cell wall become stronger as a result of a long lasting fruits and vegetables that are of high quality.

The fertilizer can be used either in land or container. This means that it can feed either potted plants or tomato plants directly planted on the soil in the backyard.

The package comes in a resealable packaging with 2 choices available in 1 pound pack or 4.5 pound pack.

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Fox Farm 6-4-4, 1-Pint FX14092 Grow Big Liquid Concentrate Fertilizer

Grow Big Liquid Concentrate Fertilizer from Fox Farm features essential micronutrients castings, Norwegian kelp and Earthrowm to help enhance the root structure and the size of the tomato plant. When the size and structure of the plant is enhanced, it will give a result of a bigger fruits, blossomed flowers and vegetables.

It has a fertilizer analysis of 6-4-4, and this fertilizer contains more nitrogen than phosphorus that is why it is considered to be an ideal fertilizer for soil that has low nitrogen content.

To use this fertilizer, you have to make sure first that the new planting of tomato plants are already settled before using 2 teaspoons per gallon of water each and every time you water the tomato plant and any other plants.

The packaging of the fertilizer is in a small jar (pint size)

  • Liquid Volume: 16 Fl. ounces
  • Item Weight: 1.3 Pounds
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Dr. Earth Organic 5 Tomato, Vegetable & Herb Fertilizer Poly Bag

Another organic tomato fertilizer by Dr Earth. The products produced by using organic fertilizers are more larger, more tastier and definitely more nutritious. Made from 100 % organic and natural ingredients proven to be safe.

With this fertilizer, you can get seven types of soil microbes that can produce edible crops and fruits that are more bigger and of high quality.

The fertilizer analysis of this fertilizer is 4-6-3. It contains more phosphorus in relation to nitrogen and potassium content therefore is it recommended to fertilize nitrogen-rich soil. However, with low nitrogen garden soil, it will nevertheless provide the plant its needed nutrients.

Dr. Earth fertilizer are composed of 5 different sizes available: 1 pound container, 4-pound container, 12-pound container, 24-pound container and 25-pound container. The packaging bags are resealable to ensure the fertilizer’s potency. Make sure to keep the fertilizer in a cool, dry area.

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Tomato-tone Organic Fertilizer – FOR ALL YOUR TOMATOES

An organic fertilizer which thousands of live beneficial soil microbes that can help to contribute the growth and production of the plant. It basically means that beneficial soil microbes helps eliminate unwanted waste on the tomato plant.

As a result of this fertilizer, the plant will produce a healthier, more balanced and nutritious vegetables tomato fruits.

This type of fertilizer contains 15 nutrients, proven and tested to yield a more plump and juicy tomatoes you have ever tasted.

Comes with a 4-pound packaging that’s can be used for all tomato varieties.

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Plant Magic Plant Food 100% Organic Fertilizer

An all purpose organic fertilizer from Plant Magic company. Fertilizing the plants and vegetables using this tomato fertilizer is simple, you just need to add the tomato fertilizer directly to the garden soil and plant roots or you can opt to add and mix it with normal water.

With just 1/2 pound bag of this organic fertilizer can cover up to 32 gallons or about 1000 sf of garden soil or plants.

Contains essential microorganisms that are beneficial to the growing plant. Fast acting fertilizer to feed tomato plant as well making the soil suitable for the growing plant.

Other than using it on tomato plant, you can also use this fertilizer on flowers, trees, herbs and shrubs.

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Schultz All Purpose 10-15-10 Plant Food Plus (8-ounce)

Schults All purpose plant food fertilizer can be use either for indoor and outdoor plants.

To use this, add seven drops of the fertilizer per quarter of water making sure to mix it well. It has a fertilizer analysis of 10-15-10. The fertilizer also contains more phosphorus and less nitrogen, an ideal fertilizer for plant soil that have too much nitrogen.

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Conclusion

When searching for the best fertilizer for tomatoes, choosing the correct and perfect fertilizer can be challenging to be able to get a results of tomato growth heightened and nutritious taste.

We hope that this guide has helped you choose and decide which best fertilizer suits your tomato plants bets. Let us know what you think.

ProductBrandNamePrice
EspomaTomato-tone Organic Fertilizer - FOR ALL YOUR TOMATOES, 4 lb. bagCheck Price on Amazon
Organic Plant MagicPlant Magic Premium All Purpose Organic Fertilizer Soluble Plant Food Concentrate for AllCheck Price on Amazon
MasterBlendMASTERBLEND 4-18-38 Complete Combo Kit Fertilizer Bulk (2.5 Pound Kit)Check Price on Amazon
Miracle-GroMiracle-Gro 2000422 Plant Food, 1.5-Pound (Tomato Fertilizer), 1.5 lbCheck Price on Amazon
Miracle-GroMiracle-Gro Shake 'N Feed Tomato, Fruit & Vegetable Plant Food, Plant Fertilizer, 4.5 lbs.Check Price on Amazon

* If you buy through links on our site, we may earn an affiliate commission. For more details, please visit our Privacy policy page.