A long blooming perennnial that's perfect in small areas of the landscape. Indigo blue flowers are produced all the way from the soil to the tips, providing an intense splash of color when it's in bloom. Rosy purple calyxes extend the color when the blooms are past peak.
Prefers full sun and average, well-drained soil of low to average moisture. Plants respond well to shearing to promote rebloom.
Hardy in zones 3-8 to -40F
Blooms late spring into early fall.