11 uses of eggshells in the home and garden

Eggshells, often discarded as kitchen waste, possess hidden potential beyond their role in cooking. Rich in calcium and minerals, eggshells can be repurposed in various ways around the home and garden, offering eco-friendly solutions and practical benefits. Discover 11 creative and useful ways to make the most of eggshells:

1. Natural Fertilizer

Crushed eggshells are a fantastic source of calcium carbonate, which plants need for healthy growth, especially for tomatoes, peppers, and eggplants. Rinse and air-dry eggshells, then crush them into small pieces. Sprinkle the crushed eggshells around the base of plants or mix them into the soil to provide slow-release calcium to your garden.

2. Seedling Starters

Create biodegradable seedling starters using eggshells. Crack open the wider end of an egg, clean the shell halves, poke a small drainage hole in the bottom, fill with potting soil, and plant seeds. Once seedlings are ready for transplanting, gently crush the shell and plant it directly into the soil—eggshell and all—to provide nutrients to the growing plant.

3. Pest Deterrent

Use crushed eggshells to deter pests like slugs, snails, and cutworms in your garden. Create a barrier around vulnerable plants by sprinkling crushed eggshells on the soil surface. The sharp edges deter pests while also enriching the soil as they break down.

4. Compost Addition

Add crushed eggshells to your compost pile to boost calcium levels and balance pH. Eggshells decompose slowly, releasing nutrients into the compost over time. Ensure the eggshells are crushed or ground finely to speed up decomposition.

5. Household Cleaner

Blend dried and ground eggshells into a fine powder to create an abrasive yet gentle household cleaner. Use this natural scrub to clean greasy pans, stubborn stains on ceramics or glassware, and even to polish silverware.

6. Calcium Supplement for Pets

Crushed eggshells can be a valuable calcium supplement for pets, especially for birds like chickens or parrots. Bake eggshells at a low temperature to dry them completely, then crush them into a fine powder. Sprinkle a small amount of eggshell powder into your pet’s food to supplement their calcium intake.

7. Skin Exfoliant

Finely ground eggshell powder can be mixed with natural ingredients like honey or yogurt to create a gentle exfoliating scrub for the skin. The calcium-rich powder helps remove dead skin cells and promotes smoother, healthier skin.

8. Garden Path Mulch

Crushed eggshells can be used as a decorative and functional mulch for garden paths. Spread a layer of crushed eggshells along paths to deter weeds, add texture, and provide a calcium boost to nearby plants as the shells break down.

9. Drain Cleaner

Crushed eggshells combined with vinegar create a natural and effective drain cleaner. Pour a mixture of vinegar and crushed eggshells down clogged drains, followed by hot water, to help break down grease, mineral buildup, and organic matter.

10. Bird Feed Supplement

Crush and sprinkle eggshells in your backyard as a calcium supplement for wild birds. Birds like sparrows and finches may consume eggshells to supplement their diet, especially during nesting and breeding seasons.

11. Art and Craft Projects

Get creative with eggshells in art and craft projects. Use dyed eggshells in mosaics, as decorative accents on homemade cards, or crush them to create textured collages. The natural colors and shapes of eggshells add unique flair to various artistic endeavors.


Eggshells are not just kitchen waste—they are valuable resources with numerous uses in the home and garden. From providing essential nutrients to plants and deterring pests in the garden to serving as natural cleaners and crafting materials, eggshells offer eco-friendly solutions and practical benefits for a variety of purposes. Start saving and repurposing eggshells today to unlock their hidden potential and contribute to sustainable living practices.

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