Known as Christmas box or sweet box, this is a must if you like scent in the garden. Any plant that flowers in the winter must work very hard to attract the few insects that are around, hence winter flowering shrubs are particularly fragrant. The Christmas box is a very unassuming, unfussy little plant with small white flowers and evergreen leaves. Plant it near an entrance, preferably in a sheltered, shady spot, to enjoy its powerful scent to the full.
Image: Wikimedia Commons / Dominicus Johannes Bergsma