Knowlains Black is a dark Ipomoea morning glory. Strong, long vines carry good-sized deep violet blooms marked with a cerise star from mid-August until frost.
Sow 1/4 inch deep after the last frost when soil is over 70°F, a few seeds every 8-12 inches. Sprouts in 7-30 days at 70-80°F; chipping or overnight soaking helps. Flowers in about 90 days.
