Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight to slightly wavy; features prominent, well-defined growth rings with a distinct contrast between light-colored earlywood and dark-colored latewood.
Color Description
Heartwood varies from light yellowish-brown to a deep reddish-orange; sapwood is yellowish-white. The color typically darkens and reddens with exposure to UV light and oxidation.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; offers some resistance to decay and rot, though susceptible to insect attack without treatment.
Common Uses
Heavy construction (beams, poles, structures), framing, flooring, cabinetry, interior trim, and boat building.
Geographic Origin
Western North America, primarily the Pacific Northwest and Rocky Mountain regions.
Market Value & Sustainability
Estimated Market Value
Approximately $2.50 to $5.50 per board foot depending on grade (Vertical Grain vs. Flat Grain) and seasoning.
Wood Age Estimate
Based on the growth ring count in the visible cross-section, the tree was approximately 45-55 years old when harvested. The sample shows signs of oxidation and weathering consistent with being cut 5-10 years ago.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and frequently FSC certified due to extensive plantation farming.
Workability
Generally easy to work with both hand and machine tools, though it can be prone to splintering and tearout during machining. Gluing, staining, and finishing properties are good.
Notable Features
Distinctive resinous scent when cut; high strength-to-weight ratio; susceptible to sap bleeding if not seasoned/kiln-dried properly.
Finish Recommendations
Varnish, polyurethane, or penetrating oils are recommended. A sanding sealer is often beneficial due to the difference in density between earlywood and latewood.
Identification Confidence
High; the identification is based on the characteristic abrupt transition between earlywood and latewood rings, the reddish-brown heartwood hue, and the distinct radial checking patterns common in this species.