Cuprocyparis leylandii, commonly called Leyland cypress, is a bi-generic fertile hybrid between Monterey cypress (Cupressus macrocarpa) and Nootka false cypress (Chamaecyparis nootkatensis).
It is a fast-growing evergreen conifer with a dense, broad-columnar to narrow-pyramidal habit that typically grows as a tree tall in landscapes unless pruned otherwise. From its Nootka false cypress parent, it inherits its habit, foliage and winter hardiness, and from its Monterey cypress parent, it inherits is branching pattern and rapid growth. Features flattened sprays of gray-green foliage on slender upright branches and dark brown fruiting cones, each with 8 scales. Scaly, reddish-brown bark.