It is hard to guess without visual, maybe if you tell us where you saw this flower It may help .
Here in my zone 5 Indiana we have several tall daisy shape blooming now
Helianthus or heliopsis most of those yellow
My best guess would be mexican sunflower, tithonia torch
or if the flowers are small1'' or so Helenium , but they are usually only 3foot or so.
Good luck
I am sorry I am tech challenged and can't walk you through how to post a photo, but you can find that info here on this sight if you ask
some one more knowledge
