Here is an idea for a topic. I use Lysimachia nummularia aurea extrensively in my shade garden. The Canadian asarum I have found to be invasive; the European variety-not invasive enough to be truly a ground cover. I have found one sedum that spreads nicely, but I have misplaced the label. Also, what is the name of that common Euphorbia that most call a weed? I have found it very easy to control and it has those great yellow blooms in early summer. Please let usknow some other choices and their hardiness. Clyde Crockett z5 ccredux@aol.com