18" tall x 15" wide (seed propagated). Rocky Mountain Columbine is the state flower of Colorado and is treasured for its big blue and white flowers. A must for mountain gardeners, this plant is at its best in cool, higher altitude areas of the West. At lower elevations, place in cool shady beds that receive regular watering. Not recommended for hot, humid climates. Campanula rotundifolia makes a fine companion plant.