Large columnar to narrow pyramidal conifer with dense branching that can easily grow to a tree of 15 to 30 m tall. The bark is reddish brown and peels in long fibrous plates when mature. The young twigs are greenish yellow first, later light reddish brown. The foliage is matt mid-green. The tree grows on any soil provided it is well drained and sufficiently moist; it also tolerates a lot of wind. Together with various cultivars of Chamaecyparis lawsoniana and Thuja, it is one of the most popular hedge plants. The naturally narrow habit is beneficial to its use as a hedge and the tree is also very amenable to pruning. Its vigorous growth means it needs to be pruned twice a year, producing a very thick hedge. The tree was bred in 1888 from a cross between Chamaecyparis nootkatensis and Cupressus macrocarpa. New insights led to C. nootkatensis being classified into another genus (Xanthocyparis). Consequently, the hybrid species name × Cupressocyparis could not be used for C. leylandii. In order to keep the amendment as small as possible, × Cuprocyparis was chosen.