Originally Posted by Snarkie

One of the most important things we can put in our soil is ground egg shells. I have been playing around with this for a while, as my dad boils a LOT of eggs. I tried crushing by hand (ouch), using a mortar and pestle; even a hammer. Then, I decided to get the blender out. I mashed them by hand and then added a little at a time on the LIQUEFY setting. Works like a charm! Just make sure you leave the lid on. It makes a lot of noxious dust.

The result is egg shell sand that mixes with any soil. It helps with drainage, as well as adding calcium to your mix. I've been adding a half cup of egg sand per gallon of mix, and it seems to be working well. I add to that, sawdust from the shop, as well as any recycled soil from dead plants, and composted wood shavings from my dad's wood turning shop. Then, I add a heavy heaping of ground pumice for additional drainage.