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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.
When putting in a Leyland cypress hedge, consider the mature height and width of this tree as well as its growth rate as you determine spacing. It pays to plant Leyland cypress correctly, since these trees can live 150 years.hen putting in a Leyland cypress hedge, consider the mature height and width of this tree as well as its growth rate as you determine spacing. It pays to plant Leyland cypress correctly, since these trees can live 150 years.