Most likely Black Locust; alternatives include Honey Locust or Osage Orange — Robinia pseudoacacia

Most likely Black Locust; alternatives include Honey Locust or Osage Orange

Robinia pseudoacacia · Hardwood

AI-generated identification · may be incorrect
Type
Hardwood
Origin
Eastern and central North America; widely planted and naturalized elsewhere.
Hardness
1,700 lbf Janka; Hard
Durability
Very Durable; heartwood has strong resistance to decay and insects, especially outdoors, though sapwood is less resistant.

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Grain Pattern

Generally straight to irregular, with prominent growth-ring contrast and occasional interlocking or wavy figure; this appears rough-sawn and partially crotch-influenced.

Color & Appearance

Fresh heartwood is yellow-green to golden brown, sometimes with darker brown streaking; sapwood is pale yellow. It typically darkens and browns with light exposure, with modest natural luster.

Hardness (Janka)

1,700 lbf Janka; Hard

Durability & Decay Resistance

Very Durable; heartwood has strong resistance to decay and insects, especially outdoors, though sapwood is less resistant.

Value & Age

Estimated Market ValueNot an official valuation

Approximately $8–$20 per board foot for sound, air-dried lumber; figured slabs may cost more.

AI estimate for general guidance only — not a professional appraisal. Actual value depends on grade, dimensions, condition, and local market demand.

Wood Age Estimate
The photograph shows freshly cut, unseasoned wood; the tree’s age cannot be estimated reliably from the image.

Common Uses

Fence posts, exterior construction, decking, furniture, flooring, turnery, tool handles, and rustic slabs.

Geographic Origin

Eastern and central North America; widely planted and naturalized elsewhere.

Workability

Hard and wear-resistant; cuts and sands adequately but can blunt tools. Irregular grain may cause tear-out, and predrilling is advisable; gluing is generally satisfactory with well-prepared surfaces.

Finish Recommendations

Allow thorough drying, then use penetrating oil, varnish, lacquer, or polyurethane; sanding to a uniform surface is important because uneven grain can absorb finish variably.

Notable Features

Very dense, heavy, and exceptionally durable; often has contrasting pale sapwood and yellow-brown heartwood. The bark is deeply furrowed and gray-brown.

Learn more about Most likely Black Locust; alternatives include Honey Locust or Osage Orange in the Wood Encyclopedia
Identified September 21, 2026