Hi and welcome!

I wanted to answer your question, as I have some experience with hybiscus. Down south, they can just be planted in the ground, so I have not had any in pots. But now that we are in the north, I am thinking about it.

In our landcaped area in front of the house we moved from, we had an incredible plant, in the hybiscus family, called Disco Belle. Huge wine colored blooms, the size of dinner plates. We were told at the nursery that it was perennial and would regrow after winter. The first winter, we were not sure... It dropped all the leaves in the winter and looked dead. We cut it back. In the spring it began to have new green leaves and within 2 months it was blooming again and grew so big it was spreading into the other plants.

So I would say that yours will come back just fine, but the best thing to do is to cut back some of the smaller branches first, before the regrowth begins, then you can prune as necessary. And don't overwater during the winter while it is dormant.

HTH

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