Bluestem goldenrod is an erect forb, 4-15dm tall, with an inflorescence that is chiefly axillary, sometimes branched, 1-5 ray florets, and 5-8 disk florets. Its fruit are hairy achenes. Leaves are chiefly cauline, may or may not be serrate, acuminate, smooth or slightly hairy, lanceolate or lance-elliptic, 6-12cm long by 1-3cm wide, and taper to sessile or obscurely short-petiolate base. Its cylindrical (terete) stem is covered with a bluish-white waxy coating.