The old plantations near me had huge gardens. Some are still maintained for visitors. Many of the plants are also in places you would least expect them.
A few years ago a friend was a resident biologist for a plantation. Everything for him was bring the land back to all native plants. It was a losing battle since some part time gardeners planted whatever, where ever. He was outnumbered and these were probably a few that he didn’t see while working there.
Back swamp trail at Magnolia Plantation.