Onosma polyphyllum
Onosma polyphyllum
15 (25)cm, is a perennial with a basal grayish green rosette with narrow leaves forming dense cushions in time, and several inflorescence with showy pale yellow flowers in early spring. Native of rocky slopes in mountains in the Krym peninsula. For any rich, very well drained soil in full sun. An excellent rock garden plant. III-IV.More Details »