Banana peels benefit plants needing potassium, especially flowering and fruiting plants like tomatoes, peppers, roses, and squash, as well as epiphytes like staghorn ferns, orchids, and bromeliads, providing nutrients for robust blooms and overall health; they work best as a diluted "banana water" or composted, rather than just burying the peel, which takes too long to break down.
Ivy plants adore banana peels as do most houseplants. They also do well when mixed with flowering plants or plants that produce a fruit, such as berries and tomatoes. Tomato plants especially love banana peels and all they offer.
Probably not. Bananas and banana peels are high in potassium, but they aren't particularly loaded in nitrogen and all the other nutrients that plants need to grow. If the peels aren't high in a variety of nutrients, they won't provide those nutrients to plants.
While many plants benefit from the nutrients in banana peels, some plants may not respond well to them. For example, plants that prefer acidic soils, such as blueberries and azaleas, might be negatively affected, as banana peels can add more potassium and potentially disrupt their pH balance.
Did you know Staghorn Ferns love banana peels? That's right! There's potassium in bananas which is a nutrient needed for healthy plants and is often found in fertilizers. So the next time you eat a banana, consider sharing the peel with your Staghorn!
However, the peel will break down so slowly that it likely won't provide adequate nutrients when your plant needs them. Another downside to banana peels as fertilizer is that rotting organic matter can attract pests such as fruit flies, fungus gnats, and even cockroaches.
"Banana peels take so long to decompose that your plants won't get the nutrients they need when they need them," says Pam Farley, author of The First-Time Gardener: Container Food Gardening.
How often should I use banana peel fertilizer for plants? You can use banana peel tea or powder every 10–14 days, depending on your plant's needs. If you're composting banana peels, you can add them regularly with other compost materials.
How to make homemade fertilizer: 10 easy options to try
One final note: Make sure your soils aren't already alkaline before you add anything to up the pH; and never ever use eggshells or other pH-raisers around acid-loving plants like azaleas and rhododendrons.
Banana water gives roses a quick hit of potassium and phosphorus, helping with strong stems and vibrant blooms. "I've used this during dry spells when my roses needed a little extra love," Francis says.
Fill the container with water, then seal it and put to one side for 5-7 days. Check the banana liquid periodically to make sure the banana skins are fully submerged int the water and that no mould has formed on top. If it has, unfortunately you'll have to throw away the liquid and start again.
Bananas are packed with potassium, magnesium, and calcium - essential nutrients for plant growth, fruiting, and overall health. They improve soil structure, increase water-holding capacity, and support beneficial microorganisms.
Banana peels contain: calcium, which promotes root growth. magnesium, which helps transform light energy into chemical energy. sulphur, which helps plants develop strong roots and repel pests.
Adding banana peels directly to the soil (trench composting) has the same issue as using banana water. Nutrients will be unavailable until the peels have completely broken down and unless you bury them deeply, they attract pests and rodents.
Perhaps you've heard the expression in which snow is referred to as "poor man's fertilizer." It turns out that this is more than just an "old wives' tale." Snow can actually add nutrients, most notably nitrogen, into the soil.
"King Fertilizer" refers to several specific brands or types of plant feed, notably Crop King (CK 55, CK 88) for broad use in Australia, Nuturf Black Label Turf King for premium sports turf, and general products like Kingenta or Phite King, often highlighting high nitrogen (like Urea) or specialized NPK blends with added humic acids for soil health, catering to everything from vegetable gardens and lawns to tree crops, providing sustained nutrient release for robust, healthy growth.
Bury Peels Directly in the Soil
Dig a small hole near the base of your plants and bury banana peels directly into the soil. As they decompose, they release nutrients that feed your plants. Try this trick with roses, tomatoes, and peppers.
“Banana peels have high levels of potassium, which strengthens the stems of plants, yields a sturdier crop, and can help fight off disease,” says environmental educator Bea Johnson. "Tomatoes, peppers, and other flowering plants can benefit greatly from a potassium additive.”
Drawbacks of Banana Water
The problem with this method is that soaking the banana peel does not release nutrients in a usable form to plants. The nutrients need to be broken down by microorganisms in the soil, like the process of making compost. There is little scientific evidence that banana water will benefit plants.
Citrus fruit, tomato products, and pickled food products can do harm to your compost. High acidity can actually kill the good bacteria that help break down the material in your compost pile.
What to Do with Overripe Bananas
Banana peel allows you to take care of your indoor and outdoor plants. The potassium it contains makes it a natural fertilizer that promotes the growth of green plants and flowers! All you have to do is cut your banana peel into small pieces and place them on the ground.