Cottonwood

🇺🇸 History in the United States

Eastern cottonwood is native to the United States and was ecologically and culturally central to the Great Plains long before European settlement: the Dakota, Lakota, Cheyenne, and Pawnee used it for food, medicine, ceremony (including the Sun Dance), and winter livestock and horse feed. For 19th-century travelers on the Oregon and Santa Fe Trails, cottonwoods were lifelines — often the only trees visible for miles, their tall crowns marked water courses and served as navigational landmarks, earning the species the nickname 'Pioneer Tree of the Plains.' Settlers pushing into the Plains in the 1800s planted cottonwoods along streams and around homesteads because the species was frequently the only timber, fuel, and shade available, and it later figured in shelterbelt plantings. Its pioneer legacy was formalized when Kansas designated it the state tree in 1937, and Nebraska later did the same (1972). In the 20th century, cottonwood also became important to forestry as one of the fastest-growing North American hardwoods, planted for pulp and biomass. Allergy-wise, cottonwood/poplar pollen has long been included in US spring pollen counts and test panels as a moderate allergen; notably, the early-summer 'cotton' that the public often blames for symptoms is seed fluff, not pollen — the actual allergenic pollen flies weeks earlier, overlapping with other spring tree pollens.