‘Wintergreen’ boxwood Buxus sinica var. insularis ‘Wintergreen’ Type:evergreen shrubsshrubs Hardiness:Zone 4 – 9 Mature Height:3-4ft Light:sun or shade Water:drought tolerantrequires regular watering Foliage:green Description (formerly microphylla var. koreana ) The most adaptable boxwood for hedges and specimen plantings. The backbone of the garden.