American Black Walnut — Juglans nigra
High - Key visual indicators including distinctive pore distribution, deep warm dark brown heartwood color with subtle purplish hues, typical grain character, and surface texture are classic features of Juglans nigra. confidence

American Black Walnut

Juglans nigra · Hardwood

Type
Hardwood
Origin
Eastern North America, ranging from the central United States to the East Coast and southern Canada.
Hardness
1,010 lbf (Medium Hardness)
Durability
Very Durable; highly resistant to heartwood decay, rot, and fungi, though susceptible to insect attack if untreated outdoors.

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Grain Pattern

Mostly straight to slightly wavy flat-sawn grain pattern with fine pore structure, subtle cathedral arching, and soft figure variations across the face.

Color & Appearance

Rich dark chocolate brown heartwood with warm reddish-purple undertones, subtle lighter sapwood blending on the edges, moderate natural luster, and characteristic darkening/golden patina shift over time with light exposure.

Hardness (Janka)

1,010 lbf (Medium Hardness)

Durability & Decay Resistance

Very Durable; highly resistant to heartwood decay, rot, and fungi, though susceptible to insect attack if untreated outdoors.

Value & Sustainability

Estimated Market Value
$10.00 to $18.00 per board foot depending on lumber grade, thickness, and clear face quality.
Wood Age Estimate
Modern processed lumber sample (likely 1-10 years post-harvest), clean machine-planed finish with fresh oxidation profile.
Sustainability Status
IUCN Least Concern; widely available, sustainable harvesting practices in place across North America, not CITES listed, FSC certified sources abundant.

Common Uses

High-end furniture, fine cabinetry, gunstocks, interior architectural millwork, flooring, veneer, turned objects, and specialty wooden goods.

Geographic Origin

Eastern North America, ranging from the central United States to the East Coast and southern Canada.

Workability

Excellent workability with both hand and machine tools; glues, sands, cuts, and turns exceptionally well, though wild grain areas may occasionally cause minor tearout during planing.

Finish Recommendations

Responds beautifully to clear natural finishes such as penetrating oils (tung oil, Danish oil), wipe-on polyurethane, or clear lacquer to showcase natural chatoyance and rich color without staining.

Notable Features

Mild pleasant scent when worked; prized for stability, excellent dimensional balance, rich natural coloring, and absence of significant sapwood defects in prime cuts.

Learn more about American Black Walnut in the Wood Encyclopedia
Identified July 27, 2026