Eggshells can be beneficial to plants in several ways, including:
Fertilizer
Eggshells are high in calcium, which is an essential plant nutrient. They can help strengthen plant cells and tissues, and can help plants avoid blossom-end rot.
Pest deterrent
The sharp edges of crushed eggshells can deter pests like snails and slugs. The smell of eggs inside the shell can also ward off deer.
Soil conditioner
Eggshells can lower soil acidity, which can help plants absorb nutrients and avoid toxic elements.
Root growth
The calcium carbonate in eggshells can help strengthen a plant's roots so it can grow faster and stronger.
Here are some ways to use eggshells in your garden:
Make egg shell fertilizer: Wash the eggshells, bake them in the oven, and crush them. You can add them to your compost bin or around plants.
Make egg shell water: Soak eggshells in water overnight, then strain the shells out and water your plants. You can use about 2 cups of the liquid per plant once a week.
Sprinkle around plants: Sprinkle small bits of crushed eggshells around plants to deter pests
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