Ferns are always great plants to have and astrantias will keep on flowering when you dead head them so their seasons is long and they have such delicate flowers.
Sarrcococa as suggested by @Pianoplayer is a fabulous plant. It is evergreen and the flowers in the winter are beautifully fragrant. They can be pruned back with no problems.
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I only found that out by accident the other day. So i’d advise against them!