This is a Turk’s cap, also called sleeping hibiscus. (Malvaviscus arboreus var.drummondii)
It is really a great little plant for part shade. Hot sun will make the leaves get puffy.
Hummingbirds love it.
i love my Turk’s Cap and would grow some from the little red seeds at the end of the season but one day cut off a long limb of the mature plant and put it in my rooter (with water) and it roots great – Buck is right my hummers always come as my TC bloom….enjoy