Black Walnut — Juglans nigra
High; identified by dark chocolate-to-amber heartwood tones, distinct semi-ring-porous grain structure, and typical finish patina common to finished walnut furniture. confidence

Black Walnut

Juglans nigra · Hardwood

Type
Hardwood
Origin
Eastern North America (United States and Canada)
Hardness
1,010 lbf (Medium Hardness)
Durability
Very Durable; naturally resistant to decay and rot, though moderately susceptible to insect attack.

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Grain Pattern

Mostly straight to slightly irregular grain with subtle cathedral patterning and fine, open pores typical of flat-sawn stock.

Color & Appearance

Rich dark chocolate brown heartwood with golden-amber undertones and lighter honey-colored hues visible where worn or light-exposed. Darkens slightly with age to a deep reddish-brown.

Hardness (Janka)

1,010 lbf (Medium Hardness)

Durability & Decay Resistance

Very Durable; naturally resistant to decay and rot, though moderately susceptible to insect attack.

Value & Sustainability

Estimated Market Value
$10.00 - $16.00 per board foot for Select & Better grade 4/4 lumber.
Wood Age Estimate
20–40 years old, evidenced by the mellowed warm patina, clear topcoat oxidation, and subtle surface micro-checking under light.
Sustainability Status
IUCN Least Concern; widely available and sustainably harvested in North America, non-CITES listed.

Common Uses

High-end furniture, cabinetry, veneer, gunstocks, turned objects, flooring, and interior architectural woodwork.

Geographic Origin

Eastern North America (United States and Canada)

Workability

Excellent workability with both hand and machine tools; glues, stains, and finishes exceptionally well, though can occasionally chip on irregular grain.

Finish Recommendations

Wipe-on polyurethane, lacquers, or penetrating oils (like Danish oil or boiled linseed oil) to enhance depth and natural warmth.

Notable Features

Mild characteristic nut-like aroma when cut or sanded; smooth fine texture; natural luster under a varnish or oil finish.

Learn more about Black Walnut in the Wood Encyclopedia
Identified July 28, 2026