oh, I'm familiar with H. medusa, and that it is tropical, just like H. rhodocheila. Temperature was not the problem, I could not keep them happy while dormant. First attempts they dried out too much, second & 3rd attempts were too wet. Haven't gone for a 4th attempt, yet. I like H. rhodocheila, as it likes bone dry winter, so all I have to do is set the pot on a shelf and forget about it until spring.