Why Bake Eggshells? Sanitization – Baking eggshells at a low temperature (around 250°F or 120°C) for about 10 minutes ensures they are sanitized, eliminating any potential bacteria like salmonella. This makes the shells safer to handle and use in the garden. Ease of Crushing – Baking makes eggshells brittle, facilitating easier crushing into a fine powder. This fine texture allows plants to absorb the calcium and other minerals more effectively when used as a soil amendment. Enhanced Nutrient Availability – The heat from baking helps break down the eggshells, increasing the availability of calcium and other minerals that benefit plant growth when applied to the soil.
Uses of Baked Eggshells in the Garden Soil Amendment – Eggshells are primarily composed of calcium carbonate, which can help neutralize acidic soils. Crushed and baked eggshells can be incorporated into the soil to provide a slow-release source of calcium, essential for healthy plant development. Compost Enrichment – Adding baked eggshells to compost adds calcium and other trace minerals, enriching the nutrient content of the compost. Baked shells break down more quickly than raw ones, enhancing compost decomposition. Pest Control – Crushed eggshells act as a natural deterrent against pests like slugs and snails. The sharp edges of the shells create a barrier that pests find uncomfortable to crawl over, protecting plants from damage. Seed Starters – Baked eggshells can serve as biodegradable seed starters. Fill clean halves with soil and plant seeds directly into them. Once seedlings are ready to transplant, the eggshell can be planted directly into the garden, gradually breaking down and releasing nutrients into the soil. Tomato Plant Health – Tomatoes benefit from calcium to prevent blossom end rot. Adding baked and crushed eggshells to the soil around tomato plants provides a steady calcium supply, promoting healthy growth and fruit development.
How to Bake Eggshells Collect and Clean – Rinse eggshells thoroughly to remove any residual egg. Allow them to dry completely. Bake – Preheat the oven to 250°F (120°C). Spread dried eggshells evenly on a baking sheet and bake for about 10 minutes. Remove and let cool. Crush – Once cooled, crush the baked eggshells into a fine powder using a mortar and pestle, rolling pin, or food processor. Store the crushed shells in a dry container until ready to use in the garden.
Baking eggshells is a straightforward method that enhances their utility in gardening practices. By integrating baked eggshells into your garden care routine, you not only reduce waste but also promote soil health, deter pests, and support plant growth effectively.
