Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Straight grain with a medium texture and open pores; the image shows a flat-sawn cathedral-like pattern developing toward the edges.
Color Description
Heartwood ranges from a deep chocolate brown to a dark coffee color; sapwood (not visible) is pale yellow-gray. The wood often exhibits a cool, grayish tint and may lighten over time when exposed to UV light.
Hardness Rating
1,010 lbf (Medium)
Durability Rating
Very Durable; highly resistant to decay but susceptible to insect attack (e.g., powderpost beetles).
Common Uses
High-end furniture, cabinetry, veneer, interior paneling, gunstocks, and turned objects.
Geographic Origin
Eastern North America
Market Value & Sustainability
Estimated Market Value
$10.00 - $18.00 per board foot depending on thickness and figuring.
Wood Age Estimate
20-40 years based on the heavy oxidation, patina of the dark pigment, and visible surface wear/micro-scratches on the finish.
Sustainability Status
Secure (IUCN Least Concern); widely available and not CITES listed.
Workability
Generally easy to work with both hand and machine tools; glues, stains, and finishes exceptionally well, though the open pores may require filling for a high-gloss finish.
Notable Features
Distinctive mild, earthy scent when worked; contains juglone, which can cause skin irritation in some individuals; prized for its dimensional stability.
Finish Recommendations
Varnish or polyurethane for durability, or Danish oil to highlight the natural deep tones. A grain filler is recommended if a smooth, mirror-like surface is desired.
Identification Confidence
High; the characteristic deep brown hue, pore structure, and grain movement are highly representative of North American Black Walnut.