(Chaix mullein, Nettle-leaved mullein, Mullein)
This is one of the few truly perennial species of mullein. Pale yellow blossoms with purple filaments bloom profusely on long flower stalks in mid- and late summer, reaching about 3 feet high. Individual flowers are short-lived but numerous, and flowering takes place over a long time. Verbascum chaixii's glossy, dark green rosettes are semi-evergreen.