Save egg shells from all the eggs you eat by simply rinsing them and placing them in an open container where they could dry out. Pulverizing them into little bits with wooden spoons. Tilled into the soil, ground eggshells provide your plants with calcium.
Chop your banana peels into 1/4 inch pieces – by chopping them, you kick start the composting process, and release some of the beneficial vitamins and minerals in the peels. Bury them anywhere from 4 inches down to just beneath the surface of the soil.
Banana peels are a rich source of nutrients your plants crave: Potassium, phosphorus, and calcium, along with a host of other minerals your plants need.