Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Generally straight but can be irregular; the end grain shows semi-ring-porous structure with visible growth rings and occasional wavy patterns near branch junctions.
Color Description
Heartwood ranges from a lighter pale brown to a dark chocolate brown with darker brown streaks. Sapwood is pale yellow-gray to nearly white. Color tends to lighten over time with UV exposure.
Hardness Rating
1,010 lbf (Medium)
Durability Rating
Durable; very resistant to heartwood decay, though sapwood is susceptible to insect attack.
Common Uses
Furniture, cabinetry, gunstocks, interior paneling, veneer, turned objects, and musical instruments.
Geographic Origin
Eastern North America
Market Value & Sustainability
Estimated Market Value
$8.00 - $15.00 per board foot depending on grade and width
Wood Age Estimate
The log section appears to be from a limb or young tree roughly 15-25 years old based on ring count; the freshly cut surface suggests it is green wood or recently harvested.
Sustainability Status
Not listed in CITES Appendices or on the IUCN Red List; widely available and generally considered sustainable in its native range.
Workability
Excellent workability with both hand and machine tools. Planes easily and glues, stains, and finishes well. It is known for holding its shape well after seasoning.
Notable Features
Distinctive mild, spicy scent when worked. Can cause allergic reactions (sensitizer) in some individuals; contains juglone, which can be toxic to certain plants.
Finish Recommendations
Tung oil or Linseed oil to enhance natural color; clear lacquer or polyurethane for durability. Darker stains are rarely used as the natural color is highly prized.
Identification Confidence
Medium-High; the deeply furrowed, dark grayish-brown bark and the semi-ring-porous end grain are classic indicators of Juglans nigra, though similar to Butternut or English Walnut.