This is a dinnerplate hibiscus (Hibiscus moscheutos) that we got years ago. It continues to come back and bloom faithfully every summer. It's a short plant, never more than 3' high, with enormous flowers. Usually it only blooms 3 weeks a year. However it's so showy in flower that it can be forgiven its relatively short bloom time.
We have wild H. moscheutos growing on our property by the creek. Three of them grow in a slough that was dammed by beavers and spend most of their time standing in water. These are big plants, about 5' high and at least 3' wide. Most of our H. moscheutos are white with a marroon eye and one is pink.
Neches River Rosemallow (Hibiscus dasycalyx), the endangered Texas hibiscus, has never exactly wowed me, but this year it bloomed after the Japanese beetles had come and gone and I like it much better this year.
A tall H. coccineus/ moscheutos hybrid that we rescued from my husband's grandmother's garden. The leaves are broader and the flowers are pinker than that of H. coccineus.
The very elegant Hibiscus coccineus. I grew a bunch of these from seed and put them in the ditch that runs by the old house site, where their roots are submerged for most of the year. They love those conditions and bloom very well even with only half a day of sun, typically from mid-July through October.
At the other end of the cultivation spectrum is Pineland Hibiscus (Hibiscus aculeatus). This hibicus is native to pine savannahs and likes acid sand with good drainage. Perhaps it can tolerate moist sand but it cannot tolerate moist heavy soil at all. The flowers are a beautiful pale lemony yellow, much like Abelmoschus manihot, but on a much shorter plant with better foliage. The foliage on the Pineland Hibiscus is elegant, highly divided and of a bristly texture; I haven't noticed much insect damage on the leaves. This hibiscus puts out blooms, usually 2 or 3 at a time, all summer.