Houseplant Hack: Save Banana Peels for Your Plants! Here's Why! by Cecilia Cannon
Your child wants a banana. Sure, why not? They're good for kids -- adults, too. But did you know that they're good for your plants, too? So after the banana is peeled, don’t go throwing the peels straight into your compost. Get all the potassium out of them by cleaning your houseplants. Run the inside of the peel on your green houseplant leaves and tah-dah! Your houseplants will shine! Dust is gone! And they will thank you for the extra potassium, too.
Banana peels can also help with plants in your garden. If you notice aphid damage, bury some cut up banana peels around the base of the affected plants. It should make those pesky insects pack up and vacate.