For a really powerful winter fragrance sarcococca hookeriana digyna will not disappoint as it fills your garden with a dramatic aroma right through the cold season from clusters of small creamy45white flowers extremely tough and resilient sweet box can be grown as a low hedge similar to other box but works just as well in borders and as ground cover too christmas box has purple45tinged stems with beautiful deep green leathery weatherproof foliage and after the blooms disappear