Penstemon digitalis (Foxglove Penstemon, Smooth Penstemon). A lovely native penstemon growing up to 3' tall in sun or part shade. Not fussy about soil, extremely hardy, and easy to start from seed (when wintersown). Will probably re-seed if not deadheaded. Try them in front of some Eupatorium — the taller Joe Pye will overtake the spent Penstemons as the season progresses. In my garden, the rosettes are evergreen.