The rarest of the three Dimorphorchis species. We think that this should actually be called Trimorphorchis, on account of the three (not two!) flower stages.
Dimorphorchis rohanii will remain more compact than Dimorphorchis lowii. Grow in conditions comparable to those Phalaenopsis enjoy, only somewhat brighter.
These are seedliings and will take several years to reach blooming size.