On Sat, 28 Jan 2012 16:02:41 -0800 (PST), Higgs Boson
wrote:

Amigas & amigos, years ago I read that eggshell water is good for
plants. I don't remember more. I kept the container on the side
steps. NEVER smelled anything like the odor emanating from the water-
immersed egg shells.

Eggshells are chiefly calcium. Dry 'em (poss toss them into the
ovenafter you've pulled out supper and let them coast on the residual
heat), crumble them up, then sprinkle around the base of plants which
have higher calcium demands (tomatoes and cucumbers for instance).

I honestly don't go through the hassle myself - I just add them to the
composter with green matter from the ktichen (but never meat/dairy),
or feed them back to my chickens (who take up the calcium for
producing eggshells - though their lay mix has oyster shell in it for
the same purpose).