Carolina Sapphire is a super fast growing evergreen tree. Like Leyland Cypress, Carolina Sapphire is drought tolerant and establishes quickly, but is often faster growing and performs BETTER in more marginal soils than Leylands. Carolina Sapphire gains width quicker than Thuja Green Giant and is a much better choice for the deep south heat. Carolina Sapphire is hardy in zones 7 – 10. Plant as close as 6′ apart for a privacy screen.