50 BLUE MOON ASTER Callistephus Pompon Flower Seeds *Comb S/H BLOOM TIME: Early Summer - Early Fall HARDINESS ZONE: N/A PLANT HEIGHT: 20" . . . PLANT SPACING: 9 - 12" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average The huge pompon blooms of the Blue Moon Aster measure a full 2 - 3 wide! They make an excellent cut flower and with all of the lovely colors they come in, you wont even need anything else for your bouquet. Butterflies love these too! Blue Moon has a long bloom period and the compact plants are absolutely covered in the large, showy flowers for a very stunning effect!