Yes, banana peels are good for plants as they provide beneficial nutrients like potassium, phosphorus, and calcium, promoting stronger roots, better flowers, and disease resistance, but they need to break down first, so methods like composting, making "banana water," or drying and crushing them are more effective than burying them whole. While they're a free, organic booster, they aren't a complete fertilizer and can attract pests if not properly composted or buried deeply.
Tomato plants especially love banana peels and all they offer.
Since a banana peel breaks down slowly, it won't give your plants the nutrients it needs on its own (though when composted, brewed into tea, or ground into a powder, it can be beneficial). Additionally, when the banana begins to rot, it can attract pests to your garden.
Each dried banana peel makes 1-2 Tbsp. of fertilizer, depending on the size of the peel. It's common practice to bury a banana peel near the roots of a potassium-loving plant, so it's safe to say that 1-2 Tbsp. of this fertilizer around your potassium loving plants will be enough.
Banana peels can be repurposed as a natural fertilizer. Here's a simple method: 1. Save banana peels 2. Soak them in water for 48 hours 3. The liquid absorbs nutrients like potassium, magnesium, and calcium 4. Use the enriched liquid to water plants This eco-friendly approach promotes plant growth and health.
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.
How to make homemade fertilizer: 10 easy options to try
How to Make DIY Banana Water Fertilizer for Plants
That's right, you can make two different garden care products by using two kinds of peels: oranges and bananas. You may remember the organic fire ant control that I shared previously made with orange oil. It contains D-Limonene, the extract from citrus peel that kills ants.
Plants That Need Potassium the Most
Examples of plants that need potassium include: Root vegetables such as potatoes, carrots, and beetroot. Fruit-bearing plants like tomatoes, peppers, cucumbers, and pumpkins. Perennial fruit trees and vines including apples, bananas, citrus, and grapes.
Consuming too much potassium can be harmful to those whose kidneys are not fully functional. If the kidneys are unable to remove excess potassium from the blood, it could be fatal. People who use beta-blockers should eat high potassium foods, such as bananas, in moderation.
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!
Use the dried banana skins on pot plants or in soil. You can also grind the dried skins to a powder. Epiphytes such as staghorn, orchids, bromeliads, and bird's nest ferns love this fertiliser.
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.
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.
"Tomatoes, peppers, and other flowering plants can benefit greatly from a potassium additive.” It's best to process banana peels before applying them to gardens, either by drying, steeping them in water, or composting. This makes the nutrients in banana peels more accessible to 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.
Bag composting
Put everything in a plastic bag, and forget about it for a few months. Again, ideally don't put anything too smelly in it, or pests will break in. Don't smell it either before it turns into compost!
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.
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.
Did you know you can turn overripe bananas into a nutrient-rich fertilizer for your garden? As I bury these bananas in my garden bed, let me tell you why it's a game-changer: Bananas are packed with potassium, magnesium, and calcium - essential nutrients for plant growth, fruiting, and overall health.
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.
Extending flowering