Banana Peel Plant Fertilizer Spray

by Merissa on March 24, 2014

in Gardening 101

Banana Peel Plant Fertilizer Spray for your plants and your garden from Little House Living

Banana Peel Plant Fertilizer Spray

Bananas are a staple in our little house. I love them dried for an easy snack, in Banana Bread, in cookies (recipe coming next month), in Banana Pudding, and on top of my oatmeal. We also like them because they are the cheapest fruit than we can buy per pound locally, all year round. That means we have a lot of banana peels at our house at any given time! Banana peels are excellent for so many different things (big list of uses coming next month!), but my very favorite is for my new favorite plant food... Banana Peel Plant Fertilizer Spray.

Call me crazy but this spray really works, my plants love it!

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Why Banana Peels?

Here's just a few of the important minerals and nutrients that are contained in banana peels:

  • Potassium (Contains 42% when dried)
  • Phosphorus
  • Calcium
  • Manganese
  • Sodium
  • Magnesium
  • Sulfur

All wonderful things for your plants!

Since these are just something you might toss in the trash or feed to your animals (which is also very good for them too!), banana peels make an excellent cheap/free fertilizer for your plants. Here is the mixture that I put together with mine. Keep in mind it will take at least a day to make (drying time).

Banana Peel Plant Fertilizer Spray

What You Need:

Step One: Take your banana peels and either place them in your food dehydrator or place them in a sunny area outside where they will not be disturbed. Make sure they are on parchment paper or in some kind of container so you can easily collect the dried pieces. Let these dry until they are completely dry.  You may also want to prep any egg shells, leave them sitting on your counter while the peels are drying so they are fully dried out as well.

Step Two: After the banana peels have completely dried, place the pieces into your food processor with the egg shell. Pulse until you have a fine powder.

Step Three: Add the powder and the Epsom salts to the spray bottle. This recipe should fill a 32 ounce spray bottle. If your bottle is smaller you can either place it in a couple bottles or half the recipe.

Step Four: Add water to your spray bottle until it's just about full. Swirl and shake the spray until the salts and the powder have dissolved into the water.

Banana Peel Plant Fertilizer Spray

You can use this mixture on houseplants on your garden plants. Don't spray directly onto plants that are in full sunlight, spray into the soil around the plants. Remember, this is a fertilizer so don't use too much at one time or you could burn your plants. Experiment with each type of plant to see how much it will need. For a larger garden you can mix up this mixture in bulk buckets and pour around your plants. Happy Growing!


Check out even more Gardening Tips on Little House Living and find even more Uses for Banana Peels.

The Gardening and Preserving Journal is here! If you are gardening or planning on doing any preserving this year, you NEED this wonderful sprial bound journal! Get your own copy here.


What kinds of fertilizers do you use on your garden? Have you ever tried making anything with leftover foods?



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{ 25 comments… read them below or add one }

1 Lana March 24, 2014 at 7:19 am

Interesting. I love this. I do throw peels straight under my rose bushes as fertilizer and rarely fertilize with anything else and I have beautiful roses every year.


2 Kathy March 24, 2014 at 3:37 pm

Is there any source of nitrogen in banana peel fertilizer? I am wondering if plants also need nitrogen to thrive?


3 Merissa March 24, 2014 at 3:41 pm

No, this mixture won’t add nitrogen. For that you may want to add a little bit of ground coffee beans into the soil.


4 Marq March 25, 2014 at 1:03 am

I cut my banana peels into small pieces and store them in a plastic bag in my freezer, until I am ready to plant my tomatoes. I then thaw them out and put a ‘handful’ peels & about a cup of powdered milk into the hole, with the tomato plant on top, and water it well.
I’ve had no problem with ‘blossom end rot’ since I’ve started doing this and I have nice healthy plants.


5 Elise March 25, 2014 at 7:57 am

My garden nut husband is standing here reading this over my shoulder lol. I think we’re definitely going to try it. My kids eat bananas like candy bars, so we have no lack of peelings. 🙂


6 Jane Rutkowski March 26, 2014 at 7:24 am

I have an old coffee container on my kitchen counter that I toss egg shells, coffee grounds, veggies and fruit scraps into as I use these items. Eventually the contents make it to the compost pile. Funny, but with banana peels, I prefer to chop them up and store them in a baggie. As other folks have noted, roses love them!


7 Vicky April 2, 2014 at 8:04 am

This is so funny, my mother has done this for years. She never wastes a banana peel. And yes her roses are beautiful and never does anything. But she doesn’t just have a green thumb, she has a green hand, lol. I have a black hand, lol.


8 Deborah April 5, 2014 at 11:18 am

WE LOVE THIS! We just tried banana peels as a ant repellent on our site. Can’t wait to try this as we love using what we got and natural alternatives to household tasks. Will be tweeting this.


9 Rozzie April 7, 2014 at 6:51 pm

I have been doing this for the past season in the garden – making fertilizer “smoothies” using banana peels, egg shells and water, and I began to add nettle in too as this apparently brings some nitrogen into the mix. Without the nitrogen this mix tends to increase leaf growth and size, but not flowers and fruit setting in my experience. So its best for leafy veg or non-fruit producing plants unless you add an additional nitrogen source.

Placing a banana peel on the top of a pot/top layer of soil helps fruits to ripen as well e.g. tomatoes


10 Caitlin | The Siren's Tale April 18, 2014 at 12:05 pm

I’ve been looking for a DIY fertilizer to spritz the bottom of my seedlings now that they’ve been transplanted to bigger pots. Do you know if this affects whether crops or organic or not? If you’re growing an organic garden, would you recommend only using egg shells from an all organic chicken? Thanks!


11 Sara Chukoian @Green Global Travel June 2, 2014 at 9:59 pm

Lovely post, I will definitely be trying this. I love stumbling across new green products. Even better that I can make it at home. Thanks for sharing!



12 Pam January 11, 2015 at 1:55 pm

This is great! I am so glad I found your site. My father was a big organic gardener, and I learned a lot from him. But now that he has passed away, I no longer have anyone to turn to for advice. Thanks!


13 Makayla February 15, 2015 at 10:20 pm

I did this just the other day actually. I had a lot of brown banana peels since I keep bananas in the freezer for smoothies. But since it’s the middle of winter in Michigan and there’s no good place to dry them out naturally, I just put them all in the oven at 200′ F for a few hours. This made them hard like chips, and I was able to blend them into a fine dry powder. It makes my plants very happy. 🙂


14 Hella Barcos April 13, 2015 at 10:28 am

Hi. I started collecting banana peels a month ago to use as a natural fertilizer. I only use organic bananas to avoid pesticides and other poison matters that conventional bananas are sprayed with! I can’t wait to se the results in my garden and green house this summer.


15 Melanie Zimmerman April 14, 2015 at 5:28 pm

I just whipped up a batch and ground everything pretty fine but the powder doesn’t dissolve into my water and it keeps stopping up the spray bottle! I ground in the food processor, spice grinder and bullet blender to be sure!!


16 Frannie Anne May 27, 2015 at 7:47 pm

Just whipped up a batch of this and fed my plants … can’t wait to see the results. I am especiall looking forward to my tomato’s recovery — pretty sure the poor thing is magnesium deficient.

Thank you for the helpful tips!


17 Zaynah west July 12, 2015 at 10:55 am

I would like to know how to store this fertilizer and how long it will last sitting out. Thank you.


18 Merissa July 12, 2015 at 6:49 pm

Make sure to store in a cool, dry area and use within a few weeks of making it.


19 L August 8, 2015 at 4:46 pm

Gosh wish I had seen this post yesterday. I had just bought a bag of 10 slightly over ripe bananas, the skins were browning but the insides were very good. I bought them to make banana ice cream with just 2 ingredients. I put them in the freezer and threw the peels in the trash. Bet I don’t do that again LOL


20 Ron February 4, 2016 at 9:02 pm

I love your idea I am a first time grower .I want to stay organic as much as I can . I am so looking forward to doing this .About the nitrogen problem I am going to add coffee grounds to the spray .I feel like this would be a great way to do this . i thank you for your help.


21 mario June 19, 2016 at 1:09 pm

I tried this banana fertilizer foliar spray, but unlike the article states, and I was wondering how it’s possible to begin with, but egg shells do not dissolve in water! Foiar is ok I guess, but no point to put egg shells in it as its not water soluble!


22 denise May 29, 2017 at 11:46 pm

eggshells dissolve in can try it!


23 C June 24, 2016 at 3:54 pm

Alternatively, you can sprinkle the powder around the base of the plants, and water in.


24 saba ahmad July 15, 2016 at 1:22 am

Very helpful tips Thanks


25 Sylvia April 13, 2017 at 9:00 am

Thank you for your blog. I am going to use this idea with the peels. A few ideas I had to work with it. I am going to use the water from my boiled eggs, (calcium in water) and I am going to soak my non organic banana peels with white vinegar water first and rinse well. This is to help remove any pesticides. Thanks for all the info. you provide.


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