"You are not alone: social media is full of claims that soaking banana skins in water makes a fertiliser that will give you bigger leaves and better blooms. The hack Put banana peels in a jar of water, leave them to sit, then pour the liquid on your plants. Bananas do contain potassium and small amounts of other nutrients. The snag is you have no idea how strong it is or what's missing."
"The method Steep a fresh peel in water for no longer than a day, strain it well, dilute again and use. The test I fed one peace lily with banana water and another with a standard fertiliser. The banana water-treated plant looked no different, but the soil developed a slimy layer and a small cloud of flies. The verdict The truth is that houseplants need a balanced diet, not a random splash of whatever has been steeping on the kitchen counter."
Many people soak banana peels in water to make a home fertiliser because bananas contain potassium and small amounts of other nutrients. The common method is to steep a fresh peel in water for no longer than a day, strain it well, dilute again and use. One test compared a peace lily watered with banana peel infusion to another given standard fertiliser; the banana-treated plant showed no visible improvement. The banana infusion caused the soil to develop a slimy layer and attracted fruit flies. Rotting peels produce odour and slime. Houseplants require a balanced fertiliser; banana water is better suited for outdoor beds or borders.
Read at www.theguardian.com
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