I have this Barbosella cogniauxiana that has some parts growing beyond the mount. Is it okay to cut this portion off and then remount on a different mount, or is there a more ideal length of growth before I should try and cut it.

As long as it has decent roots, and it looks like it does, I'd say go for it.

Jim

Thanks Jim! I will try it! Just getting that portion way out the mount.

Have mounted a portion of the Barbosella..actually I got this idea from another forum wherein olla pots where used as mounts. Just experimenting to see if it will work with an old chia planter. So have re-purposed this old chia planter..now using it for the Barbosella. I just added a wine stopper, for aesthetics and to plug that hole to deter insects from coming in.
So far the Barbosella seems okay, container feels cool and damp to the touch, which I know this orchid likes a lot.