'Can we talk about banana water? How long do you leave the skins in the water before using the fertiliser water on your plants?' A second said she puts ripe banana skins straight into the soil before pouring water on top. The science behind banana water Bananas have large volumes of minerals such as calcium, phosphorus and potassium laced in the skin. These nutrients quickly stimulate the growth of plants, which makes banana water such an excellent fertiliser.

Source: Daily Mail March 29, 2021 06:33 UTC