Black Locust
Robinia pseudoacacia · Hardwood
AI-generated identification · may be incorrect- Type
- Hardwood
- Origin
- Eastern North America.
- Hardness
- 1700 lbf (Hard)
- Durability
- Very Durable with exceptional resistance to rot and decay.
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Grain Pattern
Coarse straight grain with ring-porous growth rings and a distinct cathedral pattern on flat-sawn surfaces.
Color & Appearance
Greenish-yellow to dark brown heartwood with a narrow pale yellowish sapwood, weathering to a silver-grey patina.
Hardness (Janka)
1700 lbf (Hard)
Durability & Decay Resistance
Very Durable with exceptional resistance to rot and decay.
Value & Age
4.00 to 7.00 USD per board foot.
AI estimate for general guidance only — not a professional appraisal. Actual value depends on grade, dimensions, condition, and local market demand.
- Wood Age Estimate
- Recently harvested green wood logs, estimated under 1 year old.
Common Uses
Fence posts, decking, boat building, and outdoor furniture.
Geographic Origin
Eastern North America.
Workability
Difficult to work with hand and machine tools due to extreme hardness and abrasive minerals, causing rapid cutter dulling.
Finish Recommendations
Penetrating oils or exterior sealers perform best; finishing is challenging due to natural oils.
Notable Features
High density and natural weathering resistance derived from extractives in the heartwood.
