50 WONDER OF STAFFA ASTER Aster Frikartii Flower Seeds BLOOM TIME: Late Summer - Early Fall HARDINESS ZONE: 5 - 8 PLANT HEIGHT: 18 - 24" . . . PLANT SPACING: 18 - 24" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL/WATER: Average Attracts bees, butterflies, and birds.