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Thuja plicata 'Fastigiata': 'Fastigiata' Giant Arborvitae

Edward F. Gilman, Dennis G. Watson, Ryan W. Klein, and Deborah R. Hilbert


A native western North American tree, giant cedar can reach 180 to 200 feet in height in some areas of the Northwest but is more often seen at 50 to 70 feet in height with a spread of 15 to 20 feet. Forming a narrow pyramidal or columnar silhouette with strongly horizontal branches, giant cedar is an evergreen with fragrant, dark green, delicate needles which generously clothe the branches, casting dense shade beneath the tree. The insignificant yellow flowers are followed by small, half-inch cones which seem a little out-of-place on such a large tree. 'Fastigiata' ('Hogan'), has a dense columnar silhouette, and is reportedly very resistant to bagworms compared to the species.

Mature Thuja plicata 'Fastigiata': 'Fastigiata' giant arborvitae.
Figure 1. Mature Thuja plicata 'Fastigiata': 'Fastigiata' giant arborvitae.
Credit: Ed Gilman, UF/IFAS

General Information

Scientific name: Thuja plicata

Pronunciation: THOO-yuh ply-KAY-tuh

Common name(s): 'Fastigiata' giant arborvitae, 'Fastigiata' western redcedar

Family: Cupressaceae

USDA hardiness zones: 6A through 8A (Figure 2)

Origin: native to North America

Invasive potential: not assessed/incomplete assessment

Uses: hedge; screen; specimen; highway median

Figure 2. Range.
Credit: UF/IFAS


Height: 50 to 70 feet

Spread: 15 to 20 feet

Crown uniformity: symmetrical

Crown shape: columnar

Crown density: dense

Growth rate: moderate

Texture: fine


Leaf arrangement: unknown (Figure 3)

Leaf type: simple

Leaf margin: entire

Leaf shape: scale-like, ovate

Leaf venation: none, or difficult to see

Leaf type and persistence: evergreen, fragrant

Leaf blade length: less than 2 inches

Leaf color: green

Fall color: no color change

Fall characteristic: not showy

Figure 3. Foliage
Credit: UF/IFAS


Flower color: yellow

Flower characteristics: not showy


Fruit shape: cone, elongated

Fruit length: 0.5 to 1 inch

Fruit covering: dry or hard

Fruit color: brown

Fruit characteristics: does not attract wildlife; not showy; fruit/leaves not a litter problem

Trunk and Branches

Trunk/bark/branches: branches don't droop; very showy; typically one trunk; thorns

Pruning requirement: little required

Breakage: resistant

Current year twig color: green, brown

Current year twig thickness: thin

Wood specific gravity: 0.32


Light requirement: full sun, partial sun, or partial shade, shade tolerant

Soil tolerances: clay; sand; loam; acidic; alkaline; well-drained; occasionally wet

Drought tolerance: moderate

Aerosol salt tolerance: moderate


Roots: not a problem

Winter interest: no

Outstanding tree: yes

Ozone sensitivity: unknown

Verticillium wilt susceptibility: resistant

Pest resistance: free of serious pests and diseases

Use and Management

Tolerating shearing quite well, giant cedar is ideal for use as a hedge, screen, or specimen planting. The wood of this tree is commercially used in North America for the manufacture of roof shingles, deck boards, and siding and the split trunks were often used by Native Americans for making totem poles or canoes. Due to its narrow crown, works well close to buildings where soil is frequently alkaline, and drainage is poor.

Giant cedar naturally occurs on riverbanks, swamps, and even bogs so it should be grown in full sun or partial shade on moist, well-drained, fertile soil, and prefers a moist atmosphere. Apparently pH adaptable, growth is stunted on dry soils. Provide irrigation during the summer or locate in an area with moist soil and growth should be rapid.

Two of the other cultivars include: 'Atrovirens', excellent shining green foliage and 'Canadian Gold' with yellow foliage.

Propagation is by seed or cuttings.

Pests and Diseases

No pests or diseases are of major concern but may be occasionally bothered by bagworm, although this cultivar is reported to be more resistant than the species.

Publication #ENH-790

Release Date:May 7, 2024

Related Collections

Part of Southern Trees Fact Sheets

  • Critical Issue: 1. Agricultural and Horticultural Enterprises
Organism ID

About this Publication

This document is ENH-790, one of a series of the Department of Environmental Horticulture, UF/IFAS Extension. Original publication date November 1993. Revised December 2006 and April 2024. Visit the EDIS website at for the currently supported version of this publication.

About the Authors

Edward F. Gilman, professor emeritus; Dennis G. Watson, former associate professor, Department of Agricultural and Biological Engineering; Ryan W. Klein, assistant professor, arboriculture; and Deborah R. Hilbert, UF/IFAS Gulf Coast Research and Education Center; Department of Environmental Horticulture; UF/IFAS Extension, Gainesville, FL 32611.


  • Michael Andreu
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