Weedy moss on a brick building

Brick wall mosses, photo by Vilseskogen on Flickr (Creative Commons license)

Mosses can be weeds too.  I remember reading that the best way to get rid of moss is to scrub the bricks with bleach with an old toothpaste.  Who would do that?  Remove this gorgeous beauty?

Urban weed: Campanula rapunculoides

Urban weed: Campanula rapunculoides, a photo by Vilseskogen on Flickr.

A very crowded place to live for a weed, between a brick and a brick, in Portland, Maine.