Clematis seem easy in middle GA. I grow them in the Sandhills with no supplemental water.... So.... Drought proof...
Y'all get considerable more rain than we do, but probably not enuff to drown em.
Post some pics of your hibiscus...
I have hibiscus grandiflorus, but it's only bloomed once in my garden... Does considerable better in town in the clay... Personally... If it ain't food, really can't spare the water. Although.... I am experimenting with pond liners and rigid pools.... And.... Planting next to the overhang....
