7 Best Do-It-Yourself Garden Fertilizers

2. Banana peel :

Containing a lot of potassium, phosphorus and calcium, banana peels are perfect for flowering and plant reproduction. Simply bury a peel in the soil at the base of the plant and let it decompose.

You can also freeze over-ripe bananas instead of throwing them away. Then bury them next to a needy plant as soon as a need arises. If you prefer to use a sprayer, let a banana peel steep in water for 2 to 3 days, then use the water to spray on plants or seedlings.