Compost never ceases to astound me. Your food wastes, bacteria, and air are combined with dried yard scraps, and voila! You’ve got black gold that will make your plants grow like crazy.
Because of this, I’m awed by banana peels, too. Instead of throwing away the peel, I use it to make banana peel fertilizer by combining it with water and time. If you have a vegetable garden, banana peels are probably the most useful kitchen scrap.
The lowly banana peel in Mario Kart turns out to be a tremendous gold mine in the horticultural world.
I hope you’ll never throw away another banana peel after reading this essay.
1. What is the deal with banana peel fertilizer?
Almost every gardener is familiar with the macronutrient trinity — nitrogen, phosphorus, and potassium.
These three nutrients are absolutely necessary for plant growth and health. So much so that the fertilizer grade is always printed on the package of commercially manufactured fertilizers.
Of course, each plant’s nutrient requirements differ, but you’d be surprised how many of them thrive when fed banana peel fertilizer.
Why? Because banana peels are one of the most abundant sources of organic potassium available
Let’s get a little technical here.
You’ve probably heard that plants require potassium, but do you know why? Consider potassium to be the plant’s supervisor; it aids in practically every chemical and metabolic process that occurs during a plant’s existence.
Potassium is involved in everything from transferring nutrients and water from cell to cell to directing enzymes and even contributing in photosynthesis.
Bottom line: You need potassium in your fertilizer if you want huge, robust plants with dazzling blooms or excellent fruit.
In addition to potassium, banana peels include calcium, manganese, sulfur, and magnesium, all of which are essential minerals for plant health. Each of these nutrients contributes to plant health, whether through photosynthesis, chlorophyll production, or regulating water transport between cells.
Furthermore, banana peels do not contain nitrogen, which is vital to remember if you grow tomatoes. Tomatoes, peppers, cucumbers, and even radishes benefit from banana peel fertilizer because they have minimal nitrogen requirements.
Don’t worry though, even plants that like nitrogen will benefit from banana peel fertilizer. The calcium content of banana peels aids plant nitrogen absorption in the soil.