July-Sep, H 24-26", W 32-36", Z 5-9–(S. laevis, PP36168) This North American native selection produces numerous 2½-3" periwinkle blue flowers beginning in midsummer. The dense plants have dark green foliage that is almost completely covered with blooms. Very tolerant of heat and humidity. Requires deadheading to prolong blooming. PP
Growing Zone: 5-9
Light Requirements: Full Sun
Height: 24-36"
