Gardener with basket of egg shells spreading crushed shells around tomato plant - VH-studio/Shutterstock A quality eggshell contains about 2.2 grams of calcium carbonate, the compound that gives them ...
Eggshells get a lot of hype in gardening circles, and for good reason. They are a natural source of calcium, biodegradable, and an easy way to repurpose kitchen waste. But here is the truth many ...