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Dark Green Arborvitae

Thuja occidentalis 'Nigra'

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Dark Green Arborvitae (Thuja occidentalis 'Nigra') at Chalet Nursery

Thuja occidentalis 'Nigra'

Thuja occidentalis 'Nigra'

(Photo courtesy of NetPS Plant Finder)

Height: 15 feet

Spread: 6 feet

Sunlight:  full sun  partial shade 

Hardiness Zone: 3

Other Names: Eastern Arborvitae, American Arborvitae


A popular upright columnar evergreen for general home landscape use featuring dense dark green foliage; will grow quite tall, makes an excellent vertical accent, hardy and adaptable, takes pruning well; best in full sun, protect from drying winds

Ornamental Features:

Dark Green Arborvitae has dark green foliage. The scale-like leaves remain dark green through the winter. Neither the flowers nor the fruit are ornamentally significant. The shaggy indian red bark is not particularly outstanding.

Landscape Attributes:

Dark Green Arborvitae is a dense multi-stemmed evergreen tree with a narrowly upright and columnar growth habit. Its relatively fine texture sets it apart from other landscape plants with less refined foliage.

This is a relatively low maintenance tree. When pruning is necessary, it is recommended to only trim back the new growth of the current season, other than to remove any dieback. It has no significant negative characteristics.

Dark Green Arborvitae is recommended for the following landscape applications;

  • Accent
  • Shade
  • Vertical Accent
  • Hedges/Screening

Plant Characteristics:

Dark Green Arborvitae will grow to be about 15 feet tall at maturity, with a spread of 6 feet. It has a low canopy with a typical clearance of 1 feet from the ground, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for 50 years or more.

This tree does best in full sun to partial shade. It is quite adaptable, prefering to grow in average to wet conditions, and will even tolerate some standing water. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder zones.

This is a selection of a native North American species.

Hardiness Zone Plant Height Minimum Sunlight
Accent Shade Articulation Screening
Plant Form Winter Value
Ornamental Features