Only this one, Hoya carnosa Krimson Queen, seems to tolerate our wet/cold winter conditions. The other one, Hoya kerrii variegata has to be indoors once temps overnight goes below 50F, will not take that much rain and cold. But I bring it out during summer, in shade, and blooms during our heat wave times.
Oh there is another one, Hoya shooting star, that one always indoors, indirect light and sitting on standing water. It drops the flowers when it feels hot.