Solanum linearifolium is evergreen and not completely hardy.
It died in both the January cold in 2010 and the cold weather at the end of
I re-planted it in March 2011. It has now reached 9’ and has
been covered with these bright blue flowers for the last week or so. It should
continue to flower for some time. I planted it on a sunny south facing wall and,
even if it succumbs this winter, it will have made a big impact for two summers
Stachyurus yunnanensis is evergreen and so does not suffer from the curse of S. praecox - the late frost.
It seems perfectly hardy but is happier against a wall.
Ribes sanguineum 'Tydeman's White' is a robust currant that will perform anywhere and only needs to be fiercely pruned to keep it in check.
Bergenias get a bad name - but I love them.
B. emeiensis is perfectly hardy and is flowering now. It has neat foliage and delightful white flowers with a hint of pink.