Posted: 28/04/2015 at 22:02
Primulas too and hakonechloa grass. I have hellebores in a north facing bed that gets some sun form April to September but none at all from October to March.
Mine is a damp bed so also astilbes, stilboides, ligularia, chelone, hostas big and small, Japanese anemones, ferns but for your raise dbed you could also try snowdrops, lily of the valley, daffs, pûlmonaria, aquilegia, hemerocallis, hardy fuchsias, bergenia.
Good roses would be Falstaff, Golden Showers, New Dawn all of which repeat. Any number of clematis will love it as long as you feed them generously every spring with proper clematis food.