After reading an article from Dr Jeff Gillman, we began saving the egg shells from our own chickens. It was great to find Dr Gillman’s documentation on the value of adding dry egg shells to your garden soil for the benefit of added calcium. We dry our egg shells, crush them, and put them in garden beds in the fall in expectation of planting tomatoes there next spring.
The following article is fine place to begin your research for your egg shell project, written in reference to Dr Gilman‘s work. Additionally, read more about Dr. Gilman on his interesting site.