Onosma bourgaei Exclusive
Onosma bourgaei Exclusive
20 (30)cm, is a perennial with a basal leaf rosette and several upright inflorescences with yellow to white, narrow bell-shaped flowers. Native of rocky spots in mountains in the Caucasus and western Asia. For any rich, very well drained soil in full sun. An excellent rock garden plant. V-VI.More Details »