Buxus sempervirens (Common Box) Mature Instant Hedging 40cm Tall in Buxus sempervirens Box Hedging Box Hedging Plants 20 40cm Buxus Sempervirens Dense Evergreen Hedge Common Box 20 40cm, Buxus Sempervirens,Big Bushy Evergreen Hedging Box Hedging Plants 20 40cm Buxus Sempervirens Dense Evergreen Hedge. Buxus sempervirens is a genus of about 70 species in the family Buxaceae. Common names include common box, European box or boxwood. They are slow growing evergreen shrubs and small trees growing around 10 15cm per year. The flowers are small and yellow green, monoecious with both sexes present on a plant. It is very easy to grow and can be grown in pots or any garden, in full sun or part shade. It is classed as fully UK hardy. Outdoor Plant Grow in 12cm Pot Plant hieght (Include Pot): 20 40cm