definetly not a hardy fern in southern australia and I don't get frosts. It just collapses as soon as we have a bit of cold weahter. I would say quite tropical.

Regards
Deeinoz

Took a look at it today..now, i see green buds on the rhizomes. Maybe,it defoliates naturally as a responce to cold/drought?..well,still too soon to see if it crawls or roars back.

Hi
Have had just the opposite experience with it. Went right through winter with no problem. 34 was the low and only for a few hours though.
It is vigorously growing now that warm night temps are here.
I think most if not all the Microrums are tropical but in my experience they seem rather cold tolerant. Was really surpised at M. thailadicum. Took the low without even a slowdown . Seems to be a big difference between 10 florida and 10 california.
Hope it regrows for you. Really interesting looking fern. gary