The Leyland cypress (x Cupressocyparis leylandii) eaily grows 2 to 4 feet per year until it reaches a height of 50 to 100 feet. The evergreen forms a pyramidal outline when left to grow naturally. The tree shears well into a hedge, screen or windbreak. It is widely sold as a ''live'' Christmas tree because it easily transplants outside once the holiday season has ended. The Leyland cypress tree grows well in United States Department of Agriculture zones 6 to 10.
Plant the Leyland cypress in full sunlight or partial shade. The tree easily grows in a wide range of soils and will tolerate both acidic and alkaline conditions.
Mix aged manure and peat moss into the soil at the time of planting. The soil should feel crumbly to the touch.
Plant the Leyland cypress at the same depth it was planted in its nursery container. Dig the planting hole twice as wide as the tree's root system.
Tamp the soil down around the tree to remove any air pockets at the time of planting so the root system does not dry out. Apply 2 to 3 inches of mulch, such as peat moss or bark chips, around the tree so the soil does not dry out and to keep weed growth reduced.
Water the Leyland cypress regularly when first planted. The soil should feel moist to the touch. Once established, the tree can tolerate stretches of drought but for ample growth maintain moist soil conditions.
Fertilize the tree in the spring using a general purpose fertilizer such as a 10-10-10 or a 12-12-12. Apply according to the directions on the label. Water the fertilizer completely into the soil.
Shear the Leyland cypress when needed to maintain size and shape. The tree handles shearing well and the fast growth often requires shearing twice a year or more.