None of these plants like cold wet soil ,,i have over wintered some of these in Northern Ca and Tex ,, by planting them under an eve of the roof to keep the water from pooling around the roots ..

many tropical places have their dry seasons during the winter , which allows the plants to go dormant and not rot

Ti, hibiscus and bouganvillia will make it. They will get damaged unless you protect them. I have a bouganvillia that comes back with a vengeance every year after freezing to the ground, I have about 75% return on hibiscus if they are over a year old, and Ti will almost always come back.

Plumeria, well, NO. You will have to keep them potted, or grow them in the ground and dig them up every winter. That actually worked very well, I know a lot of folks here that do it, but I think its too much work so I keep mine potted.

Thanks for the replies. I can't wait to try some in the ground. I'm tired of moving all those pots indoors every winter.