Thank you for the suggestion.
Autumn Leaves is doing just fine in the dry heat in filtered shade, so I know it can handle my climate. It came through winter like a champ and we had a foot of snow stay on the ground for about a month, which is very, very unusual for my elevation. Of course, snow is an insulator, so I'll have see how they fair when the top growth doesn't have that kind of protection.
Even tho' my winter night temps are always below freezing, my soil doesn't freeze because the day temps are always above freezing. A winter without deep snow cover will impact the top growth more.
The lineage information in the patent doesn't give enough information to let me know what other plants with similar lineage might work. Dang ! It's always something.
I love contrasting foliage and that's why I am drawn to heucheras.
Smiles,
Lyn