I've never grown hibiscus. Rose of Sharon is very similar but the blooms are smaller. Anywhere dirt is actually fertile, one has to mow around Rose of Sharon because its seeds produce endless new plants. (They're very easy to pull up if the ground is moist.) Living here, I have never had a single seedling.
This part of West Virginia certainly looks as lush as other parts of the extended Washington, DC area, but we seem to have super dry conditions under the green of the tall oaks, so that limits what plants will grow naturally. We have a native rose, a tender light pink color, and the invasive floribunda rose, which is white. We have multiple versions of purple violets. There are other wild flowers, mostly yellows. None of the triliums, lady's slippers, jack-in-the-pulpits, and other native plants of my youth in Maryland, alas. Lady's slippers are extremely rare these days everywhere.