Douglas Fir
Pseudotsuga menziesii • Softwood
Grain Pattern
Straight grain with distinct growth rings; visible abrupt transition from lighter earlywood to darker latewood. Flat-sawn and end-grain views show prominent, slightly wavy ring patterns.
Color Description
Light brown to reddish-brown heartwood with a yellowish-white sapwood. Colors tend to darken and redden significantly with age and exposure to UV light.
Hardness Rating
660 lbf (Soft)
Durability Rating
Moderately Durable; offers some resistance to rot and decay but is susceptible to insect attack without treatment.
Common Uses
Heavy structural construction, framing, flooring, veneer, joinery, and boat building.
Geographic Origin
Western North America (Pacific Northwest)
Market Value & Sustainability
Estimated Market Value
$2.50 - $5.00 per board foot depending on grade (clear vs. construction grade).
Wood Age Estimate
Relatively fresh dimensional lumber, likely 1-3 years since harvest based on minimal oxidation and light surface soiling.
Sustainability Status
Not listed on CITES or IUCN Red List; widely available with FSC certification; considered a sustainable, fast-growing timber resource.
Workability
Generally easy to work with machines, but can be prone to splintering and tearout during power-planing. Holds nails and screws well; takes glue effectively.
Notable Features
Distinctive resinous scent when cut; high strength-to-weight ratio; features prominent resin canals visible on end-grain under magnification.
Finish Recommendations
Takes stains and finishes well, though a sanding sealer or wood conditioner is recommended to prevent blotchiness due to the density difference between earlywood and latewood.
Identification Confidence
High; the characteristic abrupt transition between earlywood and latewood rings, the reddish-orange hue, and the coarse texture are diagnostic for Douglas Fir used in structural applications.