Commonly called Dog Fennel, Summer Cedar, Yankeeweed, or Cypressweed. In the ASTER family - NOT the carrot family like the herb. Native to the Carolinas and Georgia. The air is filled with the light powdery scent of the tiny little blossoms. More info on this little wildflower here - http://namethatplant.net/plantdetail.shtml?plant=545
@corinnec Thank you, Corinne.
@joysabin Thank you.
@pamalama Thank you, Pam.