I'm glad I saw this thread.
This spring was the first time I tried growing tropical milkweed, and it was a sllloooooww process!
Now, of course, some of them are over 6 ft tall. I've collected seeds but I'll definitely take some cuttings as well.
If overwintering the plant itself, how severe a pruning can they take? Also, do you have to keep them green and alive over the winter, or can they be overwintered in a dormant state, and how? Some more detail on ideal indoor winter temperature, sun exposure, watering, humidity level, etc. would be greatly appreciated.