Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Predominantly straight but showing a strong cathedral figure in the center due to flat-sawing. Open-pored texture with occasional irregularities around small knots.
Color Description
Heartwood is a rich, dark chocolate brown with purplish-grey undertones. Sapwood is pale yellowish-white (visible at the top edge). It tends to lighten or turn more golden-brown over time with UV exposure.
Hardness Rating
1,010 lbf (Medium)
Durability Rating
Durable; highly resistant to heartwood decay, though sapwood is susceptible to insect attack.
Common Uses
High-end furniture, cabinetry, interior trim, flooring, gunstocks, veneer, and musical instruments.
Geographic Origin
Eastern United States and parts of Eastern Canada.
Market Value & Sustainability
Estimated Market Value
$10.00 - $18.00 per board foot depending on width, grade, and local availability.
Wood Age Estimate
Modern stock, likely kiln-dried and recently surfaced. Shows minimal oxidation or secondary patina characteristic of antique wood.
Sustainability Status
Least Concern (IUCN); widely available and not CITES listed. Generally considered sustainable within its native range.
Workability
Excellent workability with both hand and machine tools. Planes and glues well. Note that the dust can be a mild sensitizer and a skin irritant for some.
Notable Features
Distinctive mild, sweet scent when worked. Contains juglone (a natural herbicide). High luster when finished and excellent shock resistance.
Finish Recommendations
Best suited for clear penetrating oils (Linseed or Tung) to enhance figure, or polyurethane for durability. Darker waxes can be used to blend sapwood-heavy pieces.
Identification Confidence
High. The characteristic chocolate-to-purple hue, cathedral grain pattern, and visible sapwood contrast are classic diagnostic features of North American Black Walnut.