How to Grow Western Red Cedar Zebrina
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Western Red Cedar Zebrina
Thuja plicata 'Zebrina'
treeWestern Red Cedar Zebrina is a narrow, columnar conifer with striking yellow and green variegated foliage that creates a distinctive striped appearance. This cultivar retains the aromatic, feathery foliage of its species while offering enhanced ornamental value. It grows as a medium-sized evergreen tree ideal for screening, windbreaks, and formal landscape statements.
When should you plant Western Red Cedar Zebrina in your zone?
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Example Western Red Cedar Zebrina timeline · Pittsburgh, PA (Zone 6b)
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Plant Western Red Cedar Zebrina
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Western Red Cedar Zebrina
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives best in zones 5-8, tolerates zones 4b-9a
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Get my Western Red Cedar Zebrina timeline →Growth Stages
Establishment
First 1-2 yearsYoung sapling with delicate variegated foliage, slender columnar form emerging
Water regularly; avoid transplanting shock by maintaining consistent moisture. Protect from strong winds. Apply 2-3 inch mulch layer. No pruning needed.
Juvenile Growth
Years 2-4Columnar form becomes more defined; variegation intensifies with better sunlight exposure; height increases 12-24 inches annually
Continue consistent watering. Prune only to remove dead or damaged branches. Ensure good air circulation. Begin fertilizing lightly in early spring.
Mature Growth
Years 5+Tree reaches 20-30 feet tall with full columnar shape; dense, feathery foliage shows bold yellow-green striping; slow growth continues
Water during extended droughts. Minimal pruning needed; remove only lower branches if desired for clearance. Monitor for pest issues. Annual fertilizer optional.
Winter Dormancy
3-4 months (varies by zone)Foliage retains variegation but may show slight bronze or burgundy tinting in cold climates; growth slows dramatically
No active watering needed if winter precipitation is adequate. Avoid pruning. Protect from heavy snow damage by allowing branches to shed snow naturally. Monitor for winter desiccation in arid climates.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick bags in winter; apply Bacillus thuringiensis (Bt) in early summer when caterpillars emerge; prune heavily infested branches
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Increase humidity through misting; use horticultural oil spray; introduce predatory mites; avoid over-fertilizing with nitrogen
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Prune affected branch tips; spray with insecticidal soap or neem oil in early spring; maintain tree vigor
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Ensure excellent drainage; avoid overwatering; plant in elevated beds if drainage is poor; no cure—remove severely affected trees
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Apply horticultural oil spray in dormant season or summer oil in growing season; prune heavily infested branches
Uses
Aromatic foliage & crafts
HouseholdFresh or dried foliage emits a pleasant cedar aroma used in wreaths, floral arrangements, and natural air freshening. The wood is historically valued for its insect-repellent and rot-resistant properties in closets and storage. [source]
Wildlife habitat
WildlifeDense columnar form provides excellent shelter for birds and small mammals. The foliage offers cover and nesting sites for various songbirds year-round. [source]
Traditional herbal tea
CulinaryIn traditional medicine, Western Red Cedar foliage has been brewed as a vitamin C-rich tea, though modern use is limited and should be approached cautiously due to safety concerns. [source]
Screening & windbreak
HouseholdThe columnar, dense growth habit makes Zebrina ideal for tall privacy screens, windbreaks, and formal hedging in landscapes. The variegated foliage adds visual interest while providing function. [source]
Ornamental specimen
CraftThe bold yellow-green variegation makes this cultivar a striking focal point in formal gardens, modern landscapes, and container displays as a tall specimen accent. [source]
Harvest Tips
Western Red Cedar Zebrina is an ornamental tree, not harvested in traditional sense. However, foliage can be lightly trimmed for fresh arrangements or wreaths in fall/winter. Avoid heavy harvesting as it disrupts the columnar form. For timber (not recommended for young ornamental specimens), harvest at 40+ years of maturity.
Fun Facts
- 🌱 Western Red Cedar Zebrina's variegation intensifies in brighter light; trees grown in partial shade may show less dramatic yellow striping and appear more uniformly green.
- 🌱 The 'Zebrina' cultivar was selected for its unique color pattern and originated from the native Pacific Northwest range of Thuja plicata, where the species has been used for centuries by Indigenous peoples for canoe-building, clothing, and medicine.
- 🌱 Despite the common name 'cedar,' Western Red Cedar is actually a true cypress (genus Thuja) and is more closely related to arborvitae than to true cedars (Cedrus species).
Gardening Terms
New to gardening? Learn about terms used in this guide:
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