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Emerald Green Arborvitae
Thuja occidentalis 'Smaragd'
Columnar arborvitae cultivar with fine scale foliage; slow growing; useful for vertical forms.
The year, as this species lives it
Thirteen phases. Touch any arc — the wheel remembers what each season asks.
Mid Summer · Jul 1 – Aug 10 · happening now
A quiet season — observe, water thoughtfully, and let it be.
click another arc to travel the year →
The care sheet
The constants — what stays true in every season.
Full sun
Needs full sun to maintain compact form.
Moderate
Water regularly but avoid soggy conditions.
Balanced
Light feeding supports compact growth.
Maintenance throughout growing season; structural in spring
Trim candles and strong verticals to maintain shape.
Spring or Autumn
Branches brittle; wire early in development.
Every 3-5 years
Use free-draining soil; compacted roots dislike wet feet.
Cuttings or seed
Cuttings in late summer root slowly but reliably.
Can bronze slightly; shelter from wind to prevent desiccation.
Avoid drought stress; keep evenly moist.