20 BILLY BUTTONS / WOLLYHEADS Craspedia Globosa Flower Seeds BLOOM TIME: Late Spring - Fall HARDINESS ZONE: 6 - 11 PLANT HEIGHT: 18 - 24" . . . PLANT SPACING: 3 - 6" LIGHT REQUIREMENTS: Sun . . . SOIL / WATER: Average Billy Buttons are very popular with florists for cut flowers. They also make excellent dried flower because they are quite durable and hold their color very well. This Australian native will grow in any soil and has long stems with  flowers perched on top. They are very expensive to purchase as a dried flower for crafts, so why not grow your own?