0.2g (approx. 120 seeds). (Aster alpinus) A perennial flowering plant (5-6 years at the same place) grows 25-30 cm (10-12 in.) height. Beautiful purple, pink and white flowers, diameter 4-6 cm (1.5-2.5 in.). Blooms in the second year from May to July. Spectacular look in bouquets (keeps up to 10 days). (Aster alpinus).