Don’t Toss Those Eggshells: 17 Ways to Reuse Them (Your Plants, Drains, and Skin Will Thank You)
Eggshells are about 95% calcium carbonate—the same compound found in limestone, a common garden lime. Calcium is essential for plant cell walls, root development, and disease resistance. How to use: Grind dried eggshells into a fine powder using a coffee grinder or food processor. Sprinkle the powder into your garden soil or potting mix before planting. … Read more