Black Walnut — Juglans nigra
High; distinctive rich chocolate-brown coloration, pore structure, and characteristic grain swirl around small knots are classic indicators of Juglans nigra. confidence

Black Walnut

Juglans nigra · Hardwood

Type
Hardwood
Origin
Eastern North America
Hardness
1010 lbf (Medium Hardness)
Durability
Very Durable; highly resistant to heartwood decay, though susceptible to insect attack if left untreated.

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Grain Pattern

Mostly straight to slightly irregular grain with subtle cathedral figure patterns and small pin knots visible near the base.

Color & Appearance

Rich chocolate brown to purplish-brown heartwood with dark grain streaks. Moderately dull satin surface texture with a naturally warm undertone that mellows to golden-brown over time.

Hardness (Janka)

1010 lbf (Medium Hardness)

Durability & Decay Resistance

Very Durable; highly resistant to heartwood decay, though susceptible to insect attack if left untreated.

Value & Sustainability

Estimated Market Value
$10.00 to $16.00 per board foot (depending on grade, width, and local availability).
Wood Age Estimate
Freshly cut/planed rough lumber stock, likely harvested within the last 1-5 years based on minimal UV patina.
Sustainability Status
IUCN Least Concern; widely available and sustainably harvested in North America, non-CITES listed.

Common Uses

Fine furniture, cabinetry, gunstocks, interior trim, veneer, turned objects, and specialty wooden goods.

Geographic Origin

Eastern North America

Workability

Excellent workability with both hand and power tools. Glues, stains, and finishes exceptionally well, though care is needed around knots to avoid tearout.

Finish Recommendations

Wipe-on oil finishes (tung oil or Danish oil) enhance depth; clear satin polyurethane or lacquer works great for durable protection.

Notable Features

Faint characteristic mild scent when worked. High stability after drying and prized for its rich, naturally dark coloration without needing stain.

Learn more about Black Walnut in the Wood Encyclopedia
Identified July 22, 2026