Leyland Cypress vs. Spruce: What's the Difference and Better Alternatives

Leyland Cypress: Not a Spruce

Many people refer to the Leyland cypress as "Leland spruce," but they are not the same tree. The correct name is Leyland cypress (× Cuprocyparis leylandii), a fast-growing evergreen hybrid often used for privacy screens and windbreaks. While it's sometimes mistakenly called a spruce, it's actually a cross between Monterey cypress and Nootka cypress.

Short Lifespan and Disease Susceptibility

Leyland cypress has a relatively short life expectancy of 15–20 years because it's prone to several diseases, including Seiridium canker and root rots. Once infected, trees often decline and die quickly. If you're looking for a more durable alternative, consider the Green Giant arborvitae (Thuja standishii × plicata 'Green Giant').

Green Giant Arborvitae: A Superior Replacement

The Green Giant arborvitae is a hybrid that grows rapidly—up to 3 feet per year—reaching 30–40 feet tall with a dense, pyramidal form. It's resistant to most pests and diseases, tolerates a wide range of soils (including sandy loam and heavy clay), and handles ice, snow, and wind well. Deer and bagworms typically leave it alone.

Planting and Care

For a thick privacy hedge or wind screen, plant Green Giants 5–6 feet apart. They thrive in full sun to partial shade. You can shear them annually to maintain a desired height; left unpruned, they'll reach 20–30 feet. Water deeply (1 inch per week) during establishment, and mulch with 3 inches of organic material, keeping it away from the trunk.

Before planting, check with your local nursery to ensure Green Giant is suitable for your region.