|The cultivar, 'John Warren' has single, pink and carmine red, saucer-shaped blooms with red anthers. Deciduous climber belonging to AHS group 2. Large, 6 to 7 inch wide early summer flowers are borne on sideshoots growing from last year's shoots. Additional blooms may be borne 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.