Aster flower heads typically have yellow flowers at the center when they open. Those mostly change to purple as they age. Sort of like a botanical Red Hat Society. If you haven't read the poem that inspires them, Warning by Jenny Joseph, go do it now! (https://www.poemhunter.com/poem/warning) Doesn't matter if you're a guy, same concept still works. Bushy asters grows in AL, AR, CT, DE, FL, GA, IA, IL, IN, KY, LA, MA, MD, ME, MI, MO, MS, NC, NH, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV, NB, and ON. Ives Fen Preserve, Lenawee Co MI, 9/7/12. Aster family, Asteraceae.