Hi, Dr. Hill,
This plant was photographed August 14, found in the Piedmont region (but close to the Fall Line) along a rural road in full sun. The blooms are spent, but I’m including a photo of the fluffy seed heads and one of the back of the leaf. There were a handful of these scattered about and a mature plant was over 3-1/2 feet tall.
this is one of the native joe-pye weeds – Eupatorium dubium. It is rather common in both the coastal plain and piedmont, and has pink fl;owers when it blooms.
Steven Hill, Ph.D. Botanist SCNPS