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Threadleaf Arborvitae

Thuja occidentalis 'Filiformis (tree form)'

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Threadleaf Arborvitae (Thuja occidentalis 'Filiformis (tree form)') at Canadale Nurseries

Threadleaf Arborvitae

Threadleaf Arborvitae

(Photo courtesy of NetPS Plant Finder)

Height:  8 feet

Spread:  4 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  3b

Other Names:  Eastern White Cedar

Description:

A very interesting evergreen which features arching sprays of fine, thread-like bright green foliage on a weeping tree form; unquestionably distinctive, use as a solitary accent in the garden; needs shelter from drying winds

Ornamental Features

Threadleaf Arborvitae has attractive green foliage which emerges light green in spring. The threadlike leaves are highly ornamental and remain green throughout the winter. Neither the flowers nor the fruit are ornamentally significant.

Landscape Attributes

Threadleaf Arborvitae is an evergreen dwarf tree with a strong central leader and a rounded form and gracefully weeping branches. It lends an extremely fine and delicate texture to the landscape composition which can make it a great accent feature on this basis alone.

This is a relatively low maintenance dwarf 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.

Threadleaf Arborvitae is ideal for use as a garden accent or patio feature, and is recommended for the following landscape applications;

  • Accent
  • General Garden Use

Planting & Growing

Threadleaf Arborvitae will grow to be about 8 feet tall at maturity, with a spread of 4 feet. It tends to be a little leggy, with a typical clearance of 4 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 dwarf 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.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Garden 
Applications
Foliage Color  Texture  Plant Form  Winter Value 
Ornamental Features