Houseplant hacks: can you really use banana water as a fertiliser?
Bananas contain nutrients, but rotting peel smells and attracts fruit flies

TL;DR
- Social media claims suggest banana peels soaked in water make a good plant fertilizer.
- Bananas contain potassium and some other nutrients, but the strength of homemade fertilizer is unknown.
- A peace lily treated with banana water showed no improvement and developed slimy soil with flies.
- Houseplants require a balanced diet, not random nutrient sources.
- Rotting banana peels can cause unpleasant smells, slime, and attract fruit flies.
- If determined to try, use banana peel water outdoors on beds or borders, not on houseplants.