Hi & welcome! If you're in Z8 in FL, you may be nearby, in the panhandle area? I'm 80 miles north of Destin.
Asclepias incarnata has a wonderful scent.
Using the advanced search features here (selecting fragrant and attracts butterflies,) it pulled up over 1,600 results. I tried to paste the URL to that completed search but it's not showing up correctly in preview. Should be easy to repeat at your end (fragrant is under the heading of "flowers" and attracts butterflies is farther down, under "wildlife attractant":
http://garden.org/plants/searc...
Some plants that attract bees & butterflies like crazy don't get much credit for it, like basil & Coleus. You can't go wrong with Zinnias.
(I think Lantana smells great!)
