Little known, but once established is worthwhile in any garden, long-blooming with hard-to-find true-blue flowers :: » Blooms early to late summer (June-August) » Flowers are deep to light sky-blue, foliage is light green and airy » Prune foliage back after blooming to promote new growth and repeat blooms » Tolerates full sun, or half-day shade » Grows 12-18", spreads 12-18" » Hardiness zones 5-8 » premium 3.5" pot (1.63pt / 770mL)