I have been seeing these large leave plants growing at the roadside of Charlotte, NC. They have no flower, so far.
I took a photo of these plant today, but it would not load here. In my country, Viet name, there was a flower plant, which also has similar look of the leaves, named Quy.
Quy flowers are only in white, with lots of flowers on a stem like hydrangea would be, but Quy flowers are heavier because they are like extra large, double jasmine, also very fragrant.
For similar large leaf flowered plants, google tropical hydrangea.
