Heads of small, fertile flowers are surrounded by larger, sterile flowers which sometimes cover them. Heads are 3-6" (7.6-15.2 cm) across. Acidic soils result in blue flowers, alkaline soils result in pink flowers.
Fall Color:
Red, purple
Foliage Characteristics:
Simple, serrated, dark green leaves. Up to 8" (20.3 cm) long.