to ATP Grammaj. Much to my surprise I find
Roses of Sharon (Hibiscus syriacus) grows well in at least parts of
Florida. Beyond that I don't know but maybe there's a possibility. I'm sure someone with more knowledge will be along to help you.
Edited to add: Tropicos in the
Catalogue of the Vascular Plants of Ecuador notes it's grown there but apparently at an altitude of 2000-2500m. Here at an elevation of 200m in
Bolivia. The
Flora Mesoamericana notes a specimen growing in Calderon, El Salvador as well!!
