Can you compost eggshells? The short answer, in case you don’t have time to go through this post is yes, you can compost egg shells to use in the garden. They are great source of calcium and break ...

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 ...

A quality eggshell contains about 2.2 grams of calcium carbonate, the compound that gives them their strength. Eggshells also contain lesser amounts of magnesium, phosphorus, iron, copper, and ...