Western Red Cedar
Thuja plicata • Softwood
Grain Pattern
Straight, fine, and even grain; primarily vertical grain (quarter-sawn) orientation showing tight, parallel growth rings with no distinct figure.
Color Description
Reddish to pinkish brown heartwood with some random streaks of light brown. Sapwood is pale yellowish white. It has a dull, non-lustrous appearance and will weather to a silver-grey if left untreated outdoors.
Hardness Rating
350 lbf (Very Soft)
Durability Rating
Durable to Very Durable regarding decay resistance. Highly resistant to rot and termite attack, suitable for ground contact and exterior use.
Common Uses
Exterior siding, shingles, decking, greenhouse construction, outdoor furniture, fence posts, and sauna interiors.
Geographic Origin
Pacific Northwest of North America (from Alaska to California and inland to the Rocky Mountains).
Market Value & Sustainability
Estimated Market Value
$4.00 - $8.00 per board foot depending on grade and vertical grain premium.
Wood Age Estimate
Modern kiln-dried lumber, likely less than 5 years old based on the lack of silvering or deep oxidation and the precision of the mill finish.
Sustainability Status
Least Concern (IUCN); widely available and not CITES listed. FSC certification is common for this species.
Workability
Excellent workability with both hand and machine tools. It is very soft and prone to denting and scratching; sharp blades are necessary to avoid fuzzy grain. Glues and finishes well.
Notable Features
Features a distinct, pleasant aromatic scent. It is extremely lightweight and has high tannin content which can cause black staining when in contact with iron fasteners.
Finish Recommendations
Responds well to oil-based stains and transparent finishes. For exterior use, a UV-inhibitor is recommended to prevent graying. Avoid iron-based fasteners to prevent tannin staining.
Identification Confidence
High; the tight growth rings, characteristic reddish-brown hue, and the distinct vertical grain texture are classic indicators of Thuja plicata.