I've seen this plant growing for the last month or so in an urban area next to tracks. They stand up about 5 foot high with smooth stems. I found a plant with similar flowers back in the mid summer, I think it was a Eupatorium? Thanks for any help on this one.
SOLVED: Plant next to train tracks
hcmcdole Powder Springs, GA(Zone 7b) Sep 21, 2016
Looks like Eupatorium but which one? Maybe altissimum?
Parshooter Pensacola, FL(Zone 9a) Sep 22, 2016