Banana peels can also be sources of calcium, sulfur, and magnesium, all of which can benefit plants. Mulching with banana peels (which you should turn into compost or chop up finely) is a way to reuse kitchen scraps and help your plants flourish. For example, some gardeners bury banana peels or steep them in water to make a "tea," but these methods come with downsides. Burying the banana peels can attract unwanted critters to the garden or even make less nitrogen available to the plants as soil microbes focus on the peels instead. One common way to facilitate this is by spreading the compost (which includes banana peels) yearly over the soil's top layer.