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Dark Green Arborvitae

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Dark Green Arborvitae (Thuja occidentalis ‘Smaragd’)A popular upright 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 with some sun.

Characteristics

Average Landscape Height:
15 feet
Average Landscape Width:
7 feet
Growth Rate:
slow
Genus:
Thuja
Species:
occidentalis
Cultivar:
Nigra
Summer Foliage Color:
dark green
Minimum Light:
partial shade
Maximum Light:
full sun
Minimum Moisture:
average
Maximum Moisture:
moist
Plant Form:
columnar
Canopy:
low
Pruning:
only prune new growth
Pollution Tolerance:
medium
Other Species Names:
Eastern White Cedar
Branching:
multi-stemmed
Evergreen:
1
Density:
dense

Ornamental Features

Dark Green Arborvitae is primarily valued in the landscape for its rigidly columnar form. It has dark green evergreen foliage. The scale-like sprays of foliage remain dark green throughout the winter.

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.

Planting & Growing

Dark Green Arborvitae will grow to be about 15 feet tall at maturity, with a spread of 7 feet. It has a low canopy with a typical clearance of 1 foot 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 prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It is not particular as to soil type or pH. It is somewhat tolerant of urban pollution, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This is a selection of a native North American species.

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