Black cottonwood is the largest hardwood tree in western North America. It usually grows on moist sites on the west side of the Rockies. The most productive sites are the bottom lands of major streams and rivers along the pacific northwest coast and all of Vancouver Island.
Black cottonwood is used for lumber, veneer, fiber products, and toilet paper. Many kinds of wildlife use foliage, twigs, and buds for food. The black cottonwood can be found from Kodiak Island, Alaska, and British Columbia including all of Vancouver Island and down to Washington and Oregon.
Populations of black cottonwood grow in the coastal forests of the pacific northwest. I have seen these trees grow to tremendous sizes when the conditions are just right. Black cottonwood grows on a variety of areas, from river banks to sandy soils and humus soils and clay soils of upland sites. The highest populations can be found in the lowlands of the Pacific Northwest, along the shores of river valleys.