Aquilegia caerulea is a species of Aquilegia flower native to the Rocky Mountains from Montana south to New Mexico and west to Idaho and Arizona. Its common name is Colorado Blue Columbine; sometimes it is called "Rocky Mountain Columbine", but this properly refers to Aquilegia saximontana. It is a herbaceous perennial plant growing to 20–60 cm tall. The flowers are very variable in color, from pale blue (as in the species name caerulea) to white, pale yellow and pinkish; very commonly the flowers are bicolored, with the sepals a different shade to the petals. There are five varieties: