Spring is the time I start saving my eggshells to crush up for the garden. Why you ask? I sprinkle the crushed eggshells around the base of the plants to keep the slugs off my tomatoes. Apparently, they don't like sharp objects!
By colleen from Albany, NY
We have found from experience that if you toss your used egg shells into a cup or can and let them dryout before you crush them that they don't stick together. They also break up into smaller pieces allowing you to get more shells into one container.
This page contains the following solutions.
Save your egg shells from your favorite recipe to help out your garden. Crush your clean egg shells into small, but not powdered pieces, and spread them around the base of your plants.
My father once told me of collecting and drying egg shells for the garden. When they are dry you crush them up and spread the pieces at the base of your plants.