My neighbor wants to move her hardy hibiscus. Is now the proper time to do it, while it is dormat? I told her I'd ask for sure, but I would think now is okay.
As long as the ground isn't frozen, I'd move it.
I have moved mine here in Quebec as soon as the ground is workable in April , and I have also moved them after they have started sprouting new shoots for this year's growth in June. Just remember that the root ball with be bigger than you thought, these H.moscheutos hardy hibs are massive once you start to dig, but don't worry, pieces of root will fall of here and there, but it will survive. For the new site, dig a larger than you think you need hole, and fill with compost as these plants are heavy feeders, then plant water etc.. It should bloom the same year as you move it.