Buxus microphylla /ˈbuk.sus/
Common name: Littleleaf boxwood · Japanese boxwood · Littleleaf box
Buxus microphylla is an evergreen shrub native to Japan and Taiwan, distinguished by its small, bright-green leaves. It typically grows more compactly than common boxwood and tolerates heat and sun better. It is widely cultivated for low hedges, edging, bonsai, and foundation plantings, with many popular cultivars such as 'Winter Gem'.
Care summary
Sun
Full sun to partial shade
Water
Regular; keep evenly moist when young
Soil
Well-drained loam; tolerates clay
Hardiness
Zones 6–9
Mature height
About 60–120 cm (2–4 ft)
Pet safe
No; toxic if ingested
Difficulty
Moderate
Propagation
Propagated by semi-hardwood stem cuttings taken in summer. Take 8-10 cm cuttings, remove the lower leaves, dip in rooting hormone if available, and insert into moist, free-draining mix; keep humid and out of direct sun until rooted, typically 6-8 weeks.
Fun facts
- The species name "microphylla" means "small-leaved," referring to its tiny leaves, often under 2.5 cm long.
- It is generally more heat-tolerant than Buxus sempervirens, making it popular in warmer climates.
- Its compact cultivars are classic subjects for bonsai and cloud pruning (niwaki) in Japanese-style gardens.
- Leaves may bronze or yellow in cold winter sun, greening up again in spring.