Botanic Garden >> Gardening > >> Question and Answer >> Plant Species >> Conifers

Thuja Green Giant Life Expectancy vs. Leyland Cypress

How Long Does Thuja Green Giant Live?

Leyland cypress lives ~15–20 years due to disease susceptibility. Green Giant is newer; long-term data lacking.

Expert Estimate

Likely similar lifespan (~15–20 years). Key difference: Green Giant has narrower crown, better disease resistance, but still a relatively short-lived screen tree.

Recommendation

Contact North Carolina Forest Service Urban Forestry Section for local performance data before committing to a 600–1000 ft hedge.

Conifers: Green Giant Arborvitae Lower Branch Browning: Environmental Diagnosis; Thuja Green Giant Spacing for Privacy Screening; Thuja Green Giant in Austin: Not a Shade Tree, But a Great Screen; Green Giant Arborvitae for Shade Under Loblolly Pines; Green Giant Arborvitae in Partial Shade: Will They Work?; Thuja 'Green Giant' Hedge Spacing: 4–5 Feet for a Solid Screen; Can Thuja Green Giant Grow in a Pot?; Bagworms and Sap Flow on Green Giant Thuja; Green Giant Arborvitae Shade Tolerance; Transplanting Thuja Green Giant in Maryland: Fall Timing

Garden Articles

Green Giant Arborvitae Interior Browning: Transplant Shock or Spider Mites

Thuja Green Giant Root System: Depth, Spread & Landscape Considerations

Thuja Green Giant vs. Giant Arborvitae: Same Species, Different Names

Newly Planted Green Giant Arborvitae Leaning on a Slope: Stake or Wait?

Thuja Green Giant for Windbreak: Hurricane Resistance

Planting Green Giant Arborvitae in Wet, Marshy Soil

Thuja Green Giant Root Concerns Near a Pool

Plants

Leyland Cypress Alternatives: Why Green Giant Arborvitae Is Superior

Green Giant Arborvitae on 3:1 Slope: Planting Protocol

Green Giant Arborvitae Aphid Infestation: Systemic Control Options

Fertilizing Green Giant Arborvitae in Pennsylvania

Thuja Green Giant Root System: Safe for Structures

Leyland Cypress vs. Green Giant: Wind and Ice Resistance in Zone 7

Transplanting Thuja and Japanese Maple in Fall