Eggshells are composed of calcium carbonate, which makes them an ideal fertilizer for gardens.

How to Use Eggshell As Fertilizer (Step-by-Step Instructions)

If you’re looking for a way to use up those eggshells and give your plants a boost of nutrients at the same time, look no further than using eggshells as fertilizer. It’s a simple process that can really give your plants a boost. Here’s a step-by-step guide on how to do it.