Eggshell is composed of more than 95% minerals. Mainly calcium carbonate (37%), which can add phosphorus, potassium, magnesium and iron to plants, which has a great effect on plant growth.
1. Natural Fertilizer
Eggshell itself is a natural fertilizer that can be used during composting to increase calcium in the soil. It is best to wash the eggshells, dry them, crush them into powder, and then sprinkle them into the soil, which will slowly increase the nutrients in soil.
For those who like to grow peppers or tomatoes, it is very important to add some eggshell powder to the soil. Because these plants are susceptible to fungal diseases once they are deficient in calcium, they can even cause flowers to fall and fruits to rot.
2. Control Pests
Coarsely crumbled, egg shells form an effective barrier against soft bodied garden pests like snails and slugs that eat your plants. They do not risk through this sharp and uncomfortable jagged shells.
To do this, encircle roughly crushed layer of eggshells around the plants that are sensitive to such pests.
3. Promote chives growth
Eggshell keeps the chives in a healthy state. If you have some potted chives in the pot, you can add some crushed eggshells regularly, or crush the eggshells into powder, these will decompose gradually and provide calcium, which chives likes so much.
4. Prevent tomato rot
While planting tomatoes, place a handful of coarsely crumbled eggshells in the bottom. This will provide a good amount of minerals and trace elements to a tomato plant in all of its growing season slowly and steadily.
This will also help in healthy growth of tomato plant and develop its resistance to diseases, especially against blossom end rot occurs due to lack of calcium.
5. Eggshell potted
Eggshells can also be used as delicate containers. After the top part is broken, the egg white and yolk is clean out, wash with water properly, and dry. At the bottom of each half shell, do a small hole, for drainage. Fill it with meager amount of soil and sow seeds.