I was out spreading compost and lo and behold a heuchera came back! I lost at least four over the winter, and two the winter before. I blame my dogs tromping on them throughout the winter. I'd given up on it. Maybe it was going to come back anyway, but I like to think the compost I put over it a few weeks ago gave it the boost it needed. Of course, it's only one leaf....but that's a start. Lost another one in a different garden. Right between two other varieties. Not sure what happened.