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Banana Peel Water For Tomatoes: Why tomato plants love it

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Bananas are a great source of potassium, which is a beneficial nutrient for tomato plants.

When used on tomato plants, banana peel water will provide additional nutrients that will boost the plant’s growth. The potassium and magnesium derived from the banana peels will help build strong root systems, which will help tomato plants and fruit grow bigger and healthier.

And the best part is, there’s no need to buy them expensive chemical fertilizers and pesticides. 

This article will explain how exactly banana peel water will help boost tomato plant growth and fruiting and how you can make your very own nutrient-rich formula from banana peels.

What is Banana Peel Water?

Banana Peel water-

Banana peel water is a natural, homemade organic product that you can use for a variety of garden care issues. 

It’s made by soaking a banana peel in water, then straining out the peel and using the liquid to fertilize your tomato plants. 

It’s an inexpensive, easy way to add nutrients to your tomato plants.

If you want to know more about the benefits of using banana peels for growing healthy plants, read our blog post Using Banana Peel Water for Plants: The Benefits Explained.

Why do Tomato Plants Like Banana Peel Water?

Banana Peel Water for tomatoes

Tomato plants will benefit from banana peel water because the water contains nutrients that can benefit the plant’s growth. 

Banana peels are rich in potassium, an important nutrient for plant growth and development. Potassium is essential for forming strong stems, roots, and overall plant structure. 

Additionally, banana peels do actually contain other micronutrients that are beneficial for plant growth, such as calcium, magnesium, and phosphorus.

When banana peels are soaked in water, the above nutrients are released, creating a liquid fertilizer that can be used to water plants. 

This liquid fertilizer can provide a slow-release source of nutrients to the plant, promoting healthy growth and development. 

However, it’s important to note that banana peel water should be used in moderation, as too much potassium can actually harm plants. It’s also important to use ripe banana peels, as unripe peels may contain high tannins, which can be toxic to plants.

Feeding your tomatoes with banana peel water can help them grow healthier and more plentiful. Here are the reasons why:

It’s Natural:

The nutrients in banana peels make them a great way to add organic matter to your soil while keeping it healthy. And because they’re organic, they won’t harm your tomato plants as some other fertilizers might.

Makes Tomato Resistant to Insects and Pests:

It makes them resistant to insects and pests like aphids and whiteflies. Banana peels contain an enzyme called chitinase that kills soft-bodied insects such as aphids and thrips by dissolving their exoskeletons, so they can’t eat your plants!

Banana peels are high in potassium and magnesium, which are both essential for growing healthy tomato plants.

Prevent Blossom End Rot in Tomatoes:

The calcium in banana peels helps prevent blossom end rot in tomatoes, while the manganese aids photosynthesis and sodium promotes water flow—even at trace levels. They even contain magnesium and sulfur, elements that help make chlorophyll.

How to Apply Banana Peel Water on Tomatoes?

You can use banana peel water on tomatoes to help them grow.

First, cut the banana peels into small pieces and put them in a glass. Then, fill up the glass with water and let it sit overnight. Next day, strain out the peel and use the water to spray your tomato plants.

This will help boost your tomato plants’ growth as well as give them added nutrients!

Pro Tip: The smaller the pieces, the faster the peels will decompose in the soil and release the nutrients. Some gardeners also like to mix the peels with coffee grounds before incorporating them.

I have used this misting spray bottle from Amazon when misting my plants, and it works really well. It is durable and comes at a great price.

Spray Bottle

When Should You Use Banana Peel Water for Tomatoes?

You should use it whenever you feel like it! But there are a few specific times when it’s especially important:

After you’ve planted your tomato seeds in soil or a potting mix—this will help them grow strong roots that will carry them through the rest of their growing season (and beyond).

When transplanting your seedlings into larger pots or containers—helps prevent root rot from occurring due to an increase in moisture levels around the base of each plant’s roots after transplantation occurs.

Also, when the plant starts to flower, the potassium will give the plant the energy boost it needs.

In terms of the time of year to apply potassium fertilizer from banana peels, spring, and fall are fantastic times to apply potassium or banana peel water to repair damage and depletion from the summer.

Banana Peel as Fertilizer – Which Plants Like it?

Banana peel fertilizer is suitable for both ornamental and crop plants. Above all, plants with rich flowers or fruit produce love the additional nutrient boost.

Here are some examples:


The potassium in the peel strengthens the plants, improves the moisture balance, acts against pests, and makes the rose hardier. The phosphorus in it promotes the growth and fullness of the flowers.


The exotic flowers are very sensitive – but you can fertilize them well with banana peels. The nutrients in tomato peels help the plant to bloom, but it should be fed less than too much.


Cucumbers also have a high nutrient requirement so that the fruit can thrive. Banana peels are perfect for top-up fertilizer in July.

The fertilizer made from banana peels is also suitable for flowering plants such as geraniums and fuchsias as well as for vegetables such as zucchini, pumpkin, or carrots, always as an extra portion of nutrients.

We have written a detailed article on the different plants that like banana peel water and why.

I have had the best results when growing healthy plants by using this Miracle-Gro fertilizer on indoor and garden plants. It’s excellent value for money and will last a long time.

Miracle Grow Soluble Fertilizer

Tips For Using Banana Peel Water For Tomatoes:

To get the most out of your banana peel water, follow these tips:

  • Be careful with banana peel water for tomato plants: you don’t want to overdo it with banana peels. Too much potassium can kill a tomato plant. So if you’re trying out this method, start with a few banana peels at first and then work up from there if your plant could handle more.
  • Make sure that you don’t use too much water. If you use too much, it will drown the roots and kill them!
  • You’ll want to use a banana peel that’s still got some of the outer layer attached. If it’s just white “skin,” or if it’s already starting to turn brown, it’s not going to be as effective.
  • Make sure that the water is warm enough for your plant’s liking. If it’s too hot or too cold, it can damage its roots and prevent them from growing properly.

Takeaway: Banana Peel Water For Tomatoes

If you want to grow healthy plants by saving money, one of the easiest ways is to make your own fertilizer. One ingredient that helps with this is banana peels.

They’re rich in potassium, which enriches the soil and concentrates nutrients for stronger plant growth. If you grow lots of tomatoes, it’s worth saving your banana peels!

FAQs About Bananas Peel Water For Tomatoes

Here are some frequently asked questions about Banana Peel Water:

How many banana peels will I need to place under my tomatoes for them to grow well?

Banana peels can be buried under each plant to boost mineral content, and if space is limited, 1-2 banana peels can be placed around the base of a tomato plant. The peel should then be covered with soil so that it isn’t visible to animals or pests.

To give your tomato plants an extra boost, you can also add fresh banana peels to the soil. Soak them in water for a day or two before you place them around the roots of your tomatoes.

Does this only work with bananas?

Nope! Any fruit or vegetable that is high in potassium will work. If you have another fruit or veggie on hand with a lot of potassium, feel free to try it! Just make sure you wash off any pesticides or chemicals first.

Can I reuse the water?

Yes! You can reuse the water as many times as you like until it starts to smell off or get slimy. Just make sure to sterilize it by pouring boiling water over it before using it each time.

What kind of banana should I use?

Any kind! We recommend using ripe bananas with dark spots (but not moldy) because they have more nutrients than green ones, but either one will work just fine!

Can I use banana skin water for other fruits and vegetables?

Yes! You can use it on any plant that needs potassium, like strawberries or cucumbers!

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