Black Walnut — Juglans nigra
High - Identified by thick, deeply furrowed grey-brown bark texture, prominent thin light sapwood ring, and distinct rich brown heartwood tone typical of Juglans nigra logs. confidence

Black Walnut

Juglans nigra · Hardwood

Type
Hardwood
Origin
Eastern and Midwestern North America
Hardness
1,010 lbf (Medium)
Durability
Very Durable regarding decay resistance; resistant to heartwood rot, though vulnerable to insect attack.

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Grain Pattern

Straight to slightly wavy end-grain growth rings with semi-ring-porous growth ring boundaries; occasional crotch or figure near limb junctions.

Color & Appearance

Heartwood ranges from light to rich dark chocolate brown with distinct paler yellowish-white to cream sapwood outer ring visible along the perimeter under the bark.

Hardness (Janka)

1,010 lbf (Medium)

Durability & Decay Resistance

Very Durable regarding decay resistance; resistant to heartwood rot, though vulnerable to insect attack.

Value & Sustainability

Estimated Market Value
$8.00 to $15.00 per board foot for high-grade lumber, lower for raw un-milled logs.
Wood Age Estimate
Freshly cut log section (under 6 months old); tree age estimated around 40 to 60 years based on visible growth rings.
Sustainability Status
Least Concern (IUCN); widely available and sustainably harvested, not CITES listed.

Common Uses

High-end furniture, cabinetry, gunstocks, interior trim, flooring, veneer, and turning projects.

Geographic Origin

Eastern and Midwestern North America

Workability

Generally very easy to work with hand and power tools. Glues, stains, and finishes exceptionally well; steam-bends nicely.

Finish Recommendations

Accepts a wide variety of finishes including clear oil finishes (tung, Danish, boiled linseed) to accentuate natural grain depth, polyurethane, or lacquer.

Notable Features

Faint mild aromatic scent when worked; contains juglone which can be mild allergen/irritant; highly sought after for dark heartwood aesthetic.

Learn more about Black Walnut in the Wood Encyclopedia
Identified July 23, 2026