American Pillar Arborvitae
Thuja occidentalis 'American Pillar'
Essentials
At a Glance
Plant Type
Tree
Height
300 inches
Width
48 inches
Light
Full Sun
Zones
4, 5, 6, 7, 8
Water
Moderate
Humidity
Average
Lifespan
50+ years
Native To
North America
Toxicity
Toxic if ingested; can cause skin irritation
The Story
Plant Bio
Thuja occidentalis 'American Pillar' is a narrow, upright evergreen conifer with dense, scale-like foliage that forms a tall, columnar shape, showcasing bright green color throughout the year. This cultivar is prized for its exceptional narrow, vertical growth habit, making it ideal for privacy screens in tight spaces. It maintains its form without pruning and is more resistant to deer than many other arborvitae cultivars.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
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Planting
How to Grow
- Select a sunny location with well-drained soil.
- Tuck a few inches of compost around the roots for rich nutrients.
- Plant in spring or early fall when weather is mild.
- Water thoroughly after planting to settle soil.
- Mulch around base to retain moisture and suppress weeds.
- Prune lightly in late winter to maintain shape.
Pro Tip
Ensure good drainage to prevent root rot and promote healthy growth.
Keep It Thriving
Care Guide
Do
- Water regularly during dry spells 🌱
- Prune lightly to maintain shape
- Mulch to conserve moisture
Don't
- Avoid overwatering ❌
- Don’t prune in late summer
- Keep away from harsh chemicals
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Pest Check | ||||||||||||
| Winter Prep |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
American Pillar Arborvitae questions
What zones can American Pillar Arborvitae grow in?
American Pillar Arborvitae is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is American Pillar Arborvitae deer resistant?
Not reliably. Deer may browse American Pillar Arborvitae, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does American Pillar Arborvitae bloom?
American Pillar Arborvitae typically blooms in late spring through late spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does American Pillar Arborvitae need full sun?
American Pillar Arborvitae does best in full sun (6+ hours).
More Thuja to compare
Green Giant Arborvitae
Thuja occidentalis 'Green Giant'
Emerald Green Arborvitae
Thuja occidentalis 'Emerald Green'
Emerald Green Arborvitae
Thuja occidentalis 'Smaragd Emerald'
Degroot's Spire Arborvitae
Thuja occidentalis 'Degroot'
Eastern Arborvitae Western Arborvitae
Thuja occidentalis 'Columbia'
Fire Chief Arborvitae
Thuja occidentalis 'Fire Chief'
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