Hibiscus tiliaceus, a flowering shrub or tree in the mallow familyIn the Poplar genus:
Populus sect. Aigeiros, a taxonomic section of the poplar genus, commonly known as cottonwoods,
Any of the three species in that section: Populus deltoides, Populus fremontii, or Populus nigraVarious other species in the poplar genus with fluffy catkins: Populus angustifolia, Populus trichocarpa, or Populus heterophylla
Places
Cottonwood, AlabamaCottonwood, ArizonaCottonwood, CaliforniaCottonwood, ColoradoCottonwood, Georgia – an unincorporated community in the City of Fayetteville, GeorgiaCottonwood, IdahoCottonwood Falls, KansasCottonwood, MinnesotaCottonwood, South DakotaCottonwood, Callahan County, TexasCottonwood, Kaufman County, TexasCottonwood West, Utah, an unincorporated area in Salt Lake County that has since become part of the cities of Holladay and MurrayCottonwood Heights, Utah, a city south of Cottonwood West
People
Joe Cottonwood (b. 1947), American author of fiction and poetry for adults and children