Penstemon tubaeflorus (Superb Beardtongue)
Penstemon tubaeflorus (Superb Beardtongue)
80 (120)cm, Superb Beardtongue is a very ornamental perennial with erect stems with showy, quite large, pure white flower trumpets. It is native of semi-moist meadows and Prairies in the USA. For any rich, well drained soil in a sunny spot. V-VI.More Details »