Black Walnut
Juglans nigra • Hardwood
Grain Pattern
Usually straight but can be irregular or wavy; medium texture with semi-porous end grain showing distinct growth rings and occasional burl figure near knots as seen in this log section.
Color Description
Heartwood ranges from light brown to chocolate brown with darker streaks. Sapwood is pale yellowish-gray to white. Color tends to lighten over time with UV exposure.
Hardness Rating
1,010 lbf (Medium)
Durability Rating
Very Durable; highly resistant to heartwood decay but susceptible to insect attack (sapwood).
Common Uses
High-end furniture, cabinetry, gunstocks, interior trim, veneer, flooring, and specialty turned objects.
Geographic Origin
Eastern North America (United States and Canada).
Market Value & Sustainability
Estimated Market Value
Approximately $10.00 to $18.00 per board foot depending on grade and width.
Wood Age Estimate
Fresh cut (0-3 months) based on the high moisture content visible on the end grain, lack of graying/oxidation, and intact, moist bark.
Sustainability Status
Not listed in the CITES Appendices or on the IUCN Red List; widely available and generally managed sustainably throughout its range.
Workability
Excellent workability with both hand and machine tools; glues, stains, and finishes well. Known for holding its shape after seasoning.
Notable Features
Distinctive mild, spicy odor when worked. Contains juglone which can be an irritant to some. High contrast between sapwood and heartwood is a hallmark feature.
Finish Recommendations
Oil-based finishes (tung oil, linseed oil) enhance the deep color; polyurethane for durability; shellac or lacquer for traditional looks.
Identification Confidence
High: The combination of dark chocolate heartwood, thin creamy sapwood, and characteristic deeply furrowed rough bark is diagnostic for Black Walnut.