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Suitable for U.S. Department of Agriculture plant hardiness zones 6 through 9, Leyland cypress is a naturally fast grower, growing 20 to 30 feet tall in the first 10 years, and eventually reaching over 50 feet tall and 20 feet wide.
Leyland cypress probably shouldnât be planted near the foundation of a house. Lovely and tall, the Leyland cypress (X Cuprocyparis leylandii) is the first choice of many homeowners for a privacy screen, hedge or windbreak.However, while it is a fast-growing and attractive garden plant, you should probably keep it away from your houseâs foundation.ne of the Leyland cypressâs main boons is how quickly it grows, filling in a gap in the landscape or providing a thick privacy screen in only a few years. It will grow in a wide variety of soils, and grow 3 to 4 feet per year even in lean ones.