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How to Grow Alaskan Cedar Glauca Pendula

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Alaskan Cedar Glauca Pendula

Cupressus nootkatensis 'Glauca Pendula'

tree

A striking weeping conifer with graceful, drooping branches and blue-gray foliage that creates an elegant, columnar silhouette. This cultivar of the Nootka cypress is prized as an ornamental specimen tree for its unique pendulous form and glaucous (waxy, blue-toned) needles. It's a slow-growing, long-lived tree suitable for temperate climates.

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Example Alaskan Cedar Glauca Pendula timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Alaskan Cedar Glauca Pendula

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Alaskan Cedar Glauca Pendula

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Alaskan Cedar Glauca Pendula dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun to partial shade, minimum 4-6 hours direct sunlight daily
💧
Water: Moderate moisture; keep soil consistently moist but not waterlogged. Avoid drought stress and standing water. Requires regular watering during establishment (first 2-3 years) and during dry periods.
📏
Spacing: 96-120 (allows 8-10 feet clearance for spread and form) inches
📅
Days to maturity: Not applicable—this is a slow-growing ornamental tree; mature form achieved over 15-20+ years
🌱
Planting depth: Plant at same depth as root ball; do not bury the trunk flare

Soil

Type: Well-draining, slightly acidic loamy soil
pH: 5.5-7.0
Amendments:
Peat moss or compost at planting Mulch to retain moisture Perlite or sand to improve drainage

Growing Zones

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Thrives in zones 5-8, with limited success in zone 4b

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

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Growth Stages

1

Seedling/Young Transplant

1-2 years after planting

Small tree 1-3 feet tall with fine, delicate foliage and beginning to show blue-gray coloring. Stem is slender and needs support.

Stake for wind protection; maintain consistent soil moisture; protect from harsh winds and extreme heat; do not fertilize aggressively.

2

Establishment

3-5 years

Tree grows to 4-8 feet with more pronounced weeping habit becoming visible. Blue-gray foliage deepens in color.

Continue staking if needed; water regularly during dry spells; apply 2-3 inch mulch layer; prune only to remove dead or crossing branches.

3

Vegetative Growth

5-15 years

Continuous slow growth with elegant pendulous branching pattern well-established. Foliage density increases; height reaches 10-20 feet.

Reduce watering frequency as tree matures; prune lightly to maintain form; avoid heavy pruning; monitor for pests and disease.

4

Mature Form

15+ years onwards

Fully developed weeping silhouette with dense, drooping branches reaching 20-30 feet tall and 10-15 feet wide. Blue-gray color is richest.

Minimal pruning; remove dead wood only; maintain general health with occasional deep watering during drought; no fertilization needed.

Companion Planting

Plan your garden →

Plant with:

Japanese maple (for textural contrast) Dwarf rhododendrons Hostas (in shade beneath) Hellebores Ferns Understory shrubs like pieris or box

Avoid planting near:

Salt-laden locations (sensitive to salt spray) Extremely wet/boggy areas Heavy clay soil areas Highly competitive trees (oak, maple)

Common Pests

  • Spray with insecticidal soap or horticultural oil; maintain adequate humidity; avoid water stress

  • Prune affected branches; apply horticultural oil in dormant season; monitor regularly

  • Ensure excellent drainage; avoid overwatering; treat soil if necessary; remove severely infected trees

  • Prune infected branches below the canker; sterilize tools; avoid wounding the tree; improve air circulation

Uses

🏠

Ornamental Specimen Tree

Household

Alaskan Cedar Glauca Pendula serves as a stunning focal point in landscapes, providing year-round architectural interest with its weeping habit and distinctive blue-gray foliage. Ideal for Japanese gardens, contemporary designs, and spaces where elegance and form are priorities. [source]

🦋

Wildlife Habitat

Wildlife

The dense foliage provides shelter and nesting sites for birds and small wildlife, while its evergreen structure offers year-round cover. The tree's form naturally creates protected microclimates for beneficial insects and fauna. [source]

🎨

Foliage for Floral Arrangements

Craft

The fine, blue-gray foliage makes excellent material for floral and craft arrangements, adding color, texture, and longevity to bouquets and decorative pieces. [source]

🏠

Privacy and Windbreak

Household

While slow-growing, mature specimens effectively screen views and provide windbreak protection when planted in groups, creating natural living boundaries in landscapes. [source]

Harvest Tips

Not applicable—this is an ornamental tree grown for foliage and form, not harvested. Dead branches can be pruned in late winter to early spring.

Fun Facts

  • 🌱 The 'Glauca' designation refers to the waxy, silvery-blue coating on the foliage (called glaucescence), which helps reduce water loss and gives the tree its distinctive pale coloring.
  • 🌱 Alaskan cedar (Cupressus nootkatensis) is native to the coastal mountains of the Pacific Northwest, and despite its common name, it is not a true cedar but a false cypress, making 'Glauca Pendula' an ornamental cultivar far from its native habitat.
  • 🌱 This tree is exceptionally long-lived, with some specimens in cultivation reaching 200+ years old, making it an excellent investment for multi-generational landscapes.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Full Sun Mulch Partial Shade
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