- Canadian woods of similar characteristics that have been grouped for production and marketing. The SPF species have moderate strength, are worked easily, take paint readily, and hold nails well. They are white to pale yellow. The largest volume comes from western Canada (British Columbia and Alberta), where the principal species in the group are white spruce, Engelmann spruce, lodgepole pine, and alpine fir. The principal species in the group originating in eastern Canada are white spruce, black spruce, jack pine, and balsam fir. Some lumber production in the New England states also is marketed as spruce pine-fir and includes these species.