I live in New England and have a number of trees that have low stone walls around their bases. About three years ago, I yanked out pachysandra and planted Sweet Woodruff around the trees. They look amazing in the Spring and much nicer than pachysandra. Not only with their little white flowers but they are starting to spill over the wall making it ever prettier. It's easy to take care of too. I just rake out the leaves in the early spring and wait.
Hi Claregirl, your site sounds like a lovely location for sweet woodruff. Have you tried underplanting it with any bulbs? I have little anemone blanda in and around the sweet woodruff, which blooms about the same time. I'm also a big fan of Kaufmanniana tulips.