Eggshells can be a great source of calcium and other minerals for your plants, and they can also help repel pests like snails and slugs.

Collect your eggshells: Start by saving your eggshells after cooking or baking. Rinse them and let them dry.

Crush the eggshells: When the eggshells are dry, crush them into small pieces. You can do this with a mortar and pestle, a rolling pin, or by placing them in a plastic bag and crushing them with a spoon or the bottom of a mug.

Add the crushed eggshells to your soil: Sprinkle the crushed eggshells on the soil around your plants. You can also mix the crushed eggshells into the soil before planting.

Water the soil: Water the soil after adding the eggshells to break down the nutrients in the shells and make them accessible to the plants.