Barbosella orbicularis culture

Over 4 years late, but in case anyone comes across this looking for the info....

Growing mine like so:

In a paludarium (a terrarium where upper part is wood and moss wall, bottom is 1/3 as a bog and water area)
High humidity (don't know the numbers)
Warm temps - Low 70's at night, mid 70's day
Low to medium light
A little air movement
Pure long fibered sphagnum substrate
Growing mostly horizontal, as an epiphyte near top of terrarium wall
Evenly moist, with occasional slightly dry day, and occasional heavy watering
Fertilize every week, alternating 20-10-20 grow more, and 1/2 strength miracle grow
Started small, but over a couple years has spread to a decent size mat. Finally got a few blooms this year.

Very awesome little mini.

 

I agree it grows better on horizontal position... but I grow mine under cooler temperature(55-75F), bright shade, mounted on bare cork(no moss at all, but you may need a little while you just mount the fresh division), good air movement, good rh and dry out slightly between watering.
It can bloom anytime of the year.