No expert, but I have read something somewhere...
Maybe on one of the other threads here or from another Neo site!?
I believe when given the correct conditions many variants/hybrids of Neofinetia falacta are capable of continual growth and potentially continual re-blooming.
Though I think you have to keep you conditions just so though to get this to happen. So Temps can never drop too low, Humidity/Water/Nutrients must be just so, and good light must also be considered.
Whether this is true or not, I'm not entirely sure. Though continual growth is probably possible with these factors taken into consideration.
Anyone else know more?.... Oh I'm sure someone out there does