Anchusa azurea "Blue Heaven"

The reason I am interested in this Anchusa (AKA "Alkanet") is that I love the taller, straight species for its gorgeous gentian-blue flowers and its "don't worry about me" attitude, but in some places its height (3'-5') is too much...so, 'Blue Heaven' grows only 18-24" and that is why I want it! It blooms almost all Summer, DOES WELL IN POOR SOIL, and is DROUGHT TOLERANT. Cut back after blooming for a new flush of growth.