Giant arborvitae

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Western Red Cedar (Thuja plicata)

Description

A large red cedar, Thuja plicata or Thuja gigantea, native to the northwestern United States, Canada, and Alaska. The giant arborvitae, or western red cedar, tree can reach 200 feet in height. It was introduced into England and France in 1853 for lumber and as an ornamental tree. These giant red cedars produce a soft, knot-free, reddish-brown, aromatic lumber. They weather to a silvery gray color and are very resistant to fungi and moisture. Red cedar wood was used by native Americans of the Pacific coast for giant war canoes and totem poles. Additionally fibers prepared from strips of the inner bark were woven into blankets, baskets, mats, and cords by the Haida, Salish, Kwakiutl and Tlingit tribes (King and Hartley 1979). Currently red cedar is used for shingles, poles, fences, tanks, closet liners, and cedar chests.

Giant arborvitae (Thuja gigantea)

Synonyms and Related Terms

Thuja plicata; Thuja gigantea; cèdre rouge (Fr.); Rotzeder (Deut.); cedro rosso (It.); cedro dulce (Esp.); tuia-gigante (Port.); stinking cedar; shinglewood; canoe cedar; western red cedar; British Columbia cedar; giant cedar; Pacific red cedar

Other Properties

Color: red brown with yellow streaks. Rings: distinct. Pores:absent. Grain: faint. Rays: obscure. Soft, lightweight aromatic.

Density 23 ppcf
Molecular Weight specific gravity = 0.38
Giant arborvitae (Thuja gigantea)

Hazards and Safety

Inhalation of dust and skin contact may cause allergic reactions.

Additional Information

R.King, E.Hartley, "Unusual Fibers Used in Northwest Coast Ethnographic Textiles, Their Preparation & Their Structure", Technology & Conservation, 1/79.

Additional Images


Sources Checked for Data in Record

  • External source or communication Comment: West Coast Lumbermen's Association, Seattle, Wash.: air-ddry weight = 23 pcf
  • H.L.Edlin, What Wood is That?, Viking Press, New York, 1969
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 808
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996

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