Sweetbox (Sarcococca hookeriana) Sweetbox proves its worth with heady early-spring fragrance, not showy flowers (the tiny but aromatic flowers, tucked in the joints between leaf and stem, are hidden by the foliage) and with lustrous, narrow evergreen foliage. But you might appreciate even more this plant's ability to cover ground in shady areas. Spreading via rhizomes, a few sweetbox will knit together and form a dense, finely textured small hedge. Easily controlled and not invasive, sweetbox (also called sarcococca) is particularly useful wherever you want a troublefree but interesting groundcover that also perfumes the garden. S. ruscifolia (fragrant sweetbox) has red fruits, but you have to part the leaves to see them. S. orientalis flowers in the dead of winter.
Sweetbox needs partial to full shade and moist, well-drained soils, preferably acid.
Mature size: 4 to 6 feet high and wide for the species, but what often appears in nurseries is S. hookeriana var. humilis, which grows no more than 2 feet high. S. orientalis climbs to 2-4 feet; S. ruscifolia, 3 feet. Zones 6 to 8 for most sarcococcas, except S. ruscifolia (Zones 7 to 9). S. hookeriana can be pushed to Zone 5 with protection.