Black Ash
Fraxinus nigra
Also known as: Brown Ash, Hoop Ash, Swamp Ash
Black Ash is a North American hardwood prized for its exceptional flexibility and historic role in Indigenous basket-weaving traditions. Softer than White Ash, it thrives in swampy lowland environments. Its supply is now critically threatened by the Emerald Ash Borer, making conservation a pressing concern for woodworkers.
Botanical Profile
Fraxinus nigra is a deciduous tree of the Oleaceae family, native to northeastern North America. It grows in poorly drained swampy areas, reaching 15–20 metres in height. Bark is grey and corky; leaves are compound with 7–11 leaflets without stalks.
Physical Properties
Ring-porous hardwood with a Janka hardness of 850 lbf and air-dried density around 530 kg/m³. Growth rings are wide and clearly defined. The wood is notably flexible along the grain, splitting cleanly into thin strips — the basis of its basket-weaving heritage.
Workshop Notes
Blunting Effect
Low — generally easy on tool edges
Gluing Advice
Good adhesion with most woodworking adhesives
Finishing
Accepts stains and finishes well; open grain may benefit from a pore filler for gloss work
Steam Bending
Excellent steam bending — one of the best native North American species for bending
Historical Context
Black Ash holds deep cultural significance among Indigenous peoples of northeastern North America, particularly the Mi'kmaq, Penobscot, and Haudenosaunee nations, who have crafted intricate splint baskets from pounded ash strips for centuries. It remains an important traditional material today.
Technical Specs
Light to medium tan heartwood with pale sapwood; less contrast than White Ash
Critically threatened by Emerald Ash Borer infestation across North America