Phragmites australis
Similar to Arundo donax L.
Closely resembles common reed, Phragmites australis (Cav.) Trin. ex Steud., which has similar large hairy seed heads, but not erect and fanned in a loose plume, and which occurs mainly near swamps, marshes, and wet habitats. Common reed is on the Alert list in Tennessee due to its invasive character in the eastern U.S. See its entry on this site for more information.