Quote Originally Posted by mrtr33 View Post
Tobacco may, but the ash doesn't. It doesn't hurt compost, but it doesn't really add anything to it.

I use a flower pot or this old ceramic bowl I threw in college as an ashtray. Works for me. Sorry. I really like the big crystal single ashtrays, though. I also remember the old-school ashtrays on stands that were in fancy hotels back in the days where you could smoke in hotel lobbies.
Good point. The ash would be way too alkaline, like dumping lye on the plants. The butts on the other hand are probably on the acidic side and for me work great on roses which need acidic soil.