Leyland Cypress is a popular landscape plant and Christmas Tree. It's the Real Christmas Tree that will not drop needles. The bark of the Leyland Cypress has a skin-like texture and is quite delicate. When the tree is harvested, care should be exercised to prevent the bark from tearing as the tree falls. The Leyland cypress is a hybrid of Monterey cypress and Alaskan cedar and is a sterile hybrid. It must be propagated by cuttings. In landscape they will grow to a height of 30 to 40 feet and are capable of withstanding temperatures of 0 F.