Egg Shell Fertilizer
Eggshells are primarily made out of calcium carbonate, which is the ingredient found in agricultural lime.
The lab results found that the eggshell-infused water contained 4 mg of calcium and potassium, as well as very small amounts of phosphorus, magnesium and sodium.
Plants need calcium to thrive. Calcium helps the plants develop a strong cellular structure. Calcium deficiency is visible in young plants, because the leaves are twisted or have black spots.
The plant’s overall growth is stunted too. In fruiting plants, such as tomatoes, a lack of calcium is evident when the fruits develop blossom end rot, or a thin, dark spot on the bottom of the fruit. An additional benefit of eggshells in the garden is that it help deter slugs. The sharp edges of the shells once swallowed by slugs irritate the soft bodies making them not to come towards plant.