Bury banana peels under rosebushes. Roses need a lot of potassium, which is readily available in bananas. Take out the banana and bury the peel in the soil just under the roots of the rosebush. The potassium will nourish the rosebush throughout its growing season.
Use crushed eggshells to feed plants. Eggshells leach valuable nutrients into the soil, helping plants like tomatoes thrive throughout the season. Crush up a few and sprinkle them into the holes you dig for each plant, or into the bottom of a pot you're using for an indoor potted plant.
Crushed eggshells nourish pepper and tomato plants, helping them bear delicious, flavorful fruit.
Eggshells also serve as a natural alternative to pesticides, since they prevent slugs and other pests from attacking plants.[1]