Trembling aspen (Populus tremuloides) – grouped with black cottonwood (Populus balsamifera ssp. trichocarpa) and balsam poplar (Populus balsamifera ssp. balsamifera) – makes up approximately three to four per cent of British Columbia’s forests.
Aspen is the species most commonly used in oriented strand board (OSB), and is suitable for producing high-quality laminated veneer lumber (LVL) used as headers, joists, beams and planks.
While aspen is currently sawn into studs for construction lumber under National Lumber Grades Authority (NLGA) rules, there is greater interest in producing it for millwork. Black cottonwood’s short, fine fibres are used in tissues and other paper products.