If you haven’t already boiled the shells to cook a soft-boiled egg, do so in a saucepan. Once boiled, the shells can be crushed or chopped until a fine powder is formed. This powder can be added to the plant soil, mixing it well with the substrate. If you want a more concentrated dose of calcium, you can put boiled eggshells in a pan with water and boil them for a while. another time. This process will further reduce the shell into a finer powder. Once the powder is ready, it can be added to the plant soil. With your new fertilizer, plants will grow lusher and pests will stay away. Considering the cost of fertilizers suitable for various types of plants and all pesticides, boiling eggshells is undoubtedly a remedy that will save you money.