Shade Gardening: What can I plant in my deep dark "hole"-zone 4, 0 by dovebydesign

dovebydesign wrote:
Wow...I am liking some of these suggestions for my hosta gardens. I need to branch out from just hosta and I added ferns last year with some columbine and huerchra. The coral bells all but died. I mean they did survive but barely. It is just too dark. But bleeding heart is returning. Well of the 20 I planted 4 are returning.....it is early so I am still hopeful.

Does Pulmonaria do well in that deep shade? If so then which varities?