moss requires constant dampness, not good for stucco.
http://weloveteaching.com/mypond/moss2006.jpg

On Mon, 10 Mar 2008 00:00:40 -0700 (PDT), JayDee wrote:

Hi I'm trying to figure out the best way to cover my stucco balcony
with something green and alive. I put up some creeping fig vines, but
there's still more balcony to fill. I was thinking some kind of moss
maybe? Is this realistic? What other option might I consider that
would require little care and would do a good job of densely covering
the side and top of the stucco walls? Thanks.

- JayDee