Also...(sorry not trying to dominate the thread), the common "Heal-All" Prunella vulgaris does very well as a groundcover here in my garden. I have a variety that came up "wild" in the lawn and it withstands mowing and still flowers (lovely little purple flowers). Seems to do well especially in shady areas. I'm letting it take over a section of shaded grass where I'd like to have a "flower lawn" instead of a grass lawn. Very tidy plant, not at all invasive.
