Buxus sempervirens (Common Box or European Box; also as Boxwood) is a flowering plant in the genus Buxus, native to western and southern Europe, northwest Africa, and southwest Asia, from southern England south to northern Morocco, and east through the northern Mediterranean region to Turkey. Buxus colchica of western Caucasus and B. hyrcana of northern Iran and eastern Caucasus are commonly treated as synonyms of B. sempervirens.
It is an evergreen shrub or small tree growing to 1–9 m tall, with a trunk up to 20 cm diameter this rather large for a small evergreen bush. (exceptionally to 10 m tall and 45 cm diameter). The leaves are arranged in opposite pairs, green to yellow-green, oval, 15–30 mm long and 5–13 mm broad. The hermaphrodite flowers are inconspicuous, greenish-yellow, with no petals and are insect pollinated; the fruit is a three-lobed capsule containing 3-6 seeds.
The species typically grows on soils derived from chalk, limestone, usually as an understorey in forests of larger trees, most commonly associated with Fagus sylvatica forests, but also sometimes in open dry montane scrub, particularly in the Mediterranean region. Box Hill, Surrey is named after its notable box population, which comprises the largest area of native box woodland in England.