May-Sep, H 12-18", W 12-18", Z 3-9–(S. columbaria) A workhorse in the landscape recognized for its extraordinary production of 1½-2" lavender-blue flowers. Heat-tolerant plants have gray-green, deeply divided foliage. 2000 Perennial of the Year. PP
Growing Zone: 3-9
Light Requirements: Full Sun
Height: 12-18"