Maurice,
I really enjoyed the Pleione and the rest of the greenhouse.
I have very few Pleione, but I would wait until the plants have lost their leaves in autumn before splitting the pans, .
I am sure that if you search the forum you will find plenty of detailed advice. I will look forward to seeing some "wild" pleione on my future visits.
Can I just add that the display of N.cyclamineus ,if that's what they were, in the lawns was stunning.
Glynn