x Cuprocyparis leylandii 'Castlewellan' (Leyland cypress 'Castlewellan') is a member of the Cupressaceae family. This conifer exhibits a columnar upright growth habit and is characterized by its evergreen foliage. It has a hardiness rating of hardy – very cold winter (-20 to -15ºc), and is hardy throughout the uk and northern europe. many plants grown in containers will be damaged unless given protection. .
When fully mature, x Cuprocyparis leylandii 'Castlewellan' can reach an ultimate height of Higher than 12 metres and a spread of 2.5–4 metres. For optimal growth, it prefers south–facing, north–facing, west–facing, east–facing aspect and exposed, sheltered exposure. It thrives best in chalk, clay, loam, sand soil types and should be placed in a full sun, partial shade position.
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