200 TALL WINECUP / POPPY MALLOW (Cowboy Rose) Callirhoe leiocarpa Flower Seeds BLOOM TIME: Mar - Aug HARDINESS ZONE: 6 - 8 (and reseeds itself easily) PLANT HEIGHT: 24 - 36" . . . PLANT SPACING: 18 - 24" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average - Dry The Poppy Mallows lovely 2 inches wide wine colored flowers attract bees, butterflies, and birds. They have an upright growth habit making them easy to grow in containers.