If you have a small space in semi-shade, maybe near a gate or door then the following combination of plants works very well, particularly through the winter months: Daphne odora ‘Aureomarginata’ (shrub), underplanted with Bergenias and Viola Odorata. All these give wonderful fragrance in Winter/early Spring. Further shrubs could be added behind to continue the planting and length of season, e.g. Viburnum judii (wonderful fragrance into early spring and not too large growing), Philadelphus ‘Manteau d’hermione’ (a small growing philadelphus, flowering in summer, won’t like a lot of shade).