Eggshells can serve as a natural repellent against certain garden pests. The sharp edges of crushed eggshells can help protect your plants from crawling insects like snails, slugs and caterpillars. Scatter crushed eggshells around the base of your plants to create a barrier that these pests are reluctant to overcome.
3. Sow starter pots
Eggshells make excellent biodegradable seed pots. Fill each half-shell with potting soil, sow your seeds and place them in an egg carton for stability. When it’s time to transplant, simply crush the eggshell and plant the whole thing in the garden. The eggshell decomposes and provides the young plant with nutrients.
4. Soil improvement
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