Western Red Cedar
Thuja plicata · Evergreen, Coniferous, Softwood, Native
Plant Family
Cupressaceae
Tree Category
Evergreen, Conifer, Shade Tree, Timber Tree
Variety / Cultivar
Species type (Wild-type)
Hardiness Zones
USDA Zones 5 - 8; thrives in cool, temperate maritime climates.
About This Tree
Large, long-lived coniferous tree with a broadly pyramidal to conical crown. It features drooping branches that often turn upward at the ends (J-shape). The tree has a dense, lush appearance and can reach massive proportions with a buttressed base in old age.
Leaf Characteristics
Scale-like, flattened green leaves arranged in opposing pairs at right angles. The foliage is arranged in flat, lacy sprays. When crushed, leaves emit a distinct pineapple-like or resinous fragrance.
Bark Characteristics
Thin, fibrous, and stringy bark that is reddish-brown to grey-brown. It shreds into long vertical strips as the tree matures.
Growing Information
Origin Region
Native to the Pacific Northwest of North America, from southern Alaska to Northern California and inland to Montana.
Growing Season
Year-round evergreen growth; produces pollen in early spring; cones mature in late summer and shed seeds in autumn.
Sunlight & Water Needs
Full Sun to Partial Shade; prefers moist, well-drained soils and high humidity. It is moderately shade tolerant but has low drought tolerance.
Mature Size
Height: 100-200 feet in the wild, 50-70 feet in urban settings. Spread: 15-25 feet. Lifespan: 500-1,000+ years. Growth rate: Moderate.
Special Characteristics
Highly rot-resistant wood (heartwood), excellent timber value for shingles and siding, distinctive fragrance, and high cultural significance to Indigenous peoples of the Pacific Northwest.
Wildlife & Ecology
Provides critical nesting sites for birds and cover for small mammals. Deer and elk may browse the foliage. Seeds are eaten by squirrels and songbirds. Acts as a host for various larvae.