i wouldnt try a paph, or a cym? any orchids that prefer to keep their roots "firmly" on the ground would best be left in pots.
I guess finding images of orchids growing in their natural environment would let you see how they grow and which do best on mounts.
When i went to Aberwystyth University in Wales, where i would like to do my degree in Biology/Botany
They have a small but lovely tropical greenhouse along with other houses, and they had some vandas in hanging pots, but one had another plant growing in it, i forget the name, but it was huge! and the vanda was sticking out the top with flowers and its roots were buried in this other plant, which due to how it grew collected water in its leaves, which the Vanda was able to use.
It would be great to see mounts with other plants, that can co exist. It is still a mystery to me how Vandas grow in the wild, their shape (the tall stem with dangling roots) makes me wonder how they grow to any size in the wild.
If anyone has any info i would be most greatful
