Thanks for the idea, CS! I've seen that plant before, but never knew its name.
DogsNDaylilies, I'd like to eventually get to a cottage garden feeling in place of all the grass in front of the house. I figure it will take a few seasons to develop, so I don't mind if things are a bit sparse at first (and starting with a smaller area). My taste in plants is pretty old-fashioned: lots of color, but not really exotic or flashy.