Yes, it's a Hibiscus palustris and it just flowered !
Some other stuff...
DH's herbs out of control.
My number one new favorite long blooming annual this year is
Angel Mist lavender Angelonia or Angelonia angustifolia Benth.
Can't forget the long blooming perennial Geranium x 'Rozanne'.
Disappointing Cardinal Climbers...only a flower here and there.
Never ever had this happen before. All that rain...I guess.
Pruned Autumn Joy Sedum in shade. Nice and tidy.
Same kind in full sun.