|Clematis 'Asao' is a compact, deciduous climber and belongs to AHS group 2. Large, 4 to 5 inch wide single flowers are borne on sideshoots growing from last year's shoots in late spring. Additional blooms are borne through the rest of summer on the tips of the present year's growth. Leaves are divided into 3 widely or regularly lance-shaped leaflets, 4 to 6 inches long. Beautiful along fences and arbors. Part shade is preferable.