This superb perennial is another that attracts more interest in the nursery every year primarily due to its long bloom time (June–July, and again in fall) and its lovely sky blue flowers. It has rough green foliage with numerous spikes of sky blue blooms rising a moderate 15" from the compact plant. Spent flowers should be cut back for a repeat performance in fall. Spectacular in a mass and with lighter-colored perennials such as Coreopsis, Daylilies (try 'Stella De Oro'), Black Eyed Susan or Sedums.
Height: 15 - in