How to Grow Alaskan Cedar

Alaskan Cedar

Callitropsis nootkatensis

tree

Alaskan cedar is a large coniferous evergreen tree native to the Pacific Northwest, characterized by gracefully drooping branches and flattened, feathery foliage with a pleasant aromatic scent. It typically grows 40-60 feet tall in the wild, with a narrow, columnar form that becomes more pendulous with age. The tree produces small woody cones and reddish-brown, shredding bark that adds winter interest.

Looking for a specific variety?

Pendula Compacta Aurea Glauca Pendula Green Arrow

Growing Conditions

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Sun: Full sun to partial shade; 6+ hours of direct sunlight preferred, though tolerates afternoon shade in warmer climates

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Water: Consistent moisture is critical; requires regular watering, especially during establishment (first 2-3 years). Prefers cool, moist conditions and struggles in hot, dry climates. Water deeply 1-2 times weekly during growing season; reduce in winter.

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Spacing: 120-240 inches (10-20 feet apart for landscape plantings) inches

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Days to maturity: Variable; trees reach landscape maturity in 10-15 years; full mature size in 40-60+ years

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Planting depth: Plant with root ball at soil level; do not bury stem. Plant in early spring or fall.

Soil

Type: Well-draining, moist, slightly acidic soil; tolerates sandy loam to clay loam

pH: 5.5-7.0

Amendments:

Peat moss or composted bark for moisture retention Mulch to maintain cool soil temperatures Avoid compacted soils

Growing Zones

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Thrives in zones 4b-8b; prefers cool, moist climates with maritime influence

4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

Growth Stages

Seedling/Young Transplant

1-2 years

Small tree with tender, feathery foliage and underdeveloped root system; narrow upright form beginning to develop

Protect from wind and direct afternoon sun; maintain consistent moisture; mulch around base; avoid fertilizing heavily

Establishment

2-5 years

Tree develops deeper root system and begins characteristic graceful branching; foliage becomes denser; growth accelerates

Continue regular deep watering; maintain mulch layer; prune only to remove dead/damaged branches; ensure good air circulation

Active Growth

5-20 years

Vigorous upward and lateral growth; characteristic pendulous branching becomes pronounced; tree reaches 20-40 feet

Maintain moisture especially during heat; thin crowded branches if needed for form; monitor for spider mites in dry conditions

Mature Form

20+ years

Tree reaches full ornamental form with graceful, weeping branching structure; cones produce viable seed

Minimal pruning needed; remove lower dead branches; monitor for disease in humid climates; maintain moisture during droughts

Companion Planting

Plan your garden →

Plant with:

Sword fern Salal Rhododendron Western hemlock Pacific dogwood Oregon grape Huckleberry

Avoid planting near:

Salt spray-prone locations Hot, arid exposures Windy unprotected sites Areas with poor drainage or standing water

Common Pests

Increase humidity and water spray foliage; use horticultural oil or miticide if severe; remove heavily infested branches
Strong water spray to dislodge; insecticidal soap; neem oil for persistent infestations
Prune heavily infested branches; dormant oil spray in early spring; monitor for regrowth
Ensure excellent drainage; avoid overwatering and compacted soil; remove affected trees if disease is advanced
Prune affected branch tips; improve air circulation; avoid overhead watering; apply fungicide in wet springs if needed

Uses

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Timber and Wood Products

Household

Alaskan cedar wood is highly valued for its rot-resistant properties, attractive grain, and aromatic qualities. It is used for lumber, shingles, boat building, outdoor furniture, and cedar chests. [source]

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Ornamental Landscaping

Craft

The gracefully weeping form and fine foliage texture make Alaskan cedar an outstanding specimen tree for parks, large gardens, and formal landscapes. Dwarf cultivars are available for smaller spaces. [source]

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Aromatic Essential Oil

Household

The foliage produces a pleasant cedar fragrance used in aromatherapy, potpourri, and commercial fragrance products. Oil can be extracted for use in natural insect repellents and cleaners. [source]

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Wildlife Habitat

Wildlife

Mature trees provide shelter and nesting habitat for songbirds, owls, and small mammals. The dense, pendulous branches offer excellent cover from predators and weather. [source]

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Indigenous Uses and Cultural Significance

Cultural

Pacific Northwest Indigenous peoples have long used Alaskan cedar for canoes, boxes, masks, and other carved items due to its workability and durability. The tree holds important cultural and spiritual significance. [source]

Harvest Tips

Not typically harvested as a crop. For ornamental purposes, deadheading spent cones is optional. Branches can be pruned for cut foliage and floral arrangements when tree is mature (after 5+ years). Best pruning occurs in late fall or early spring during dormancy.

Fun Facts

🌱 Alaskan cedar is not a true cedar (genus Cedrus) but rather a false cedar; it is more closely related to cypress and juniper, which is why its scientific name includes 'Callitropsis'.
🌱 The wood is so rot-resistant that standing dead trees (called 'snags') can remain erect for decades and are prized habitat for woodpeckers and other cavity-nesting birds.
🌱 In its native range along the Pacific coast of North America, Alaskan cedar can live for over 3,000 years, making it one of the longest-lived trees in North America.

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