Eggshells are a source of calcium for soil when they are crushed and added as a natural amendment. Calcium is an essential nutrient for plant growth, and eggshells can help provide this nutrient to your garden or plants when used as a soil conditioner. ^_

• Eggshells are primarily composed of calcium carbonate, which is a form of calcium. This calcium is slowly released into the soil as the eggshells break down over time.
• Eggshells are also alkaline, so when they break down, they can help to raise the pH of acidic soils. This can be beneficial for plants that prefer slightly alkaline conditions.

I do stop in Leofinance for now. ^_