Paphiopedilum leeanum - Blooms and a question

[rbarata]

This one is a primary hybrid between Paphiopedilum spicerianum and Paphiopedilum insigne. Easy to grow...at least I don't give it much attention.

Also, I have a question...when should I repot? I could not find a categoric answer to this question. As you can see, the pot is really in need to repot...I haven't done yet because I don't know the best time and the plants seem to like it like that....and I'm lazy!

There are 6 plants in this pot. This hybrid produces one single flower per plant, so I have 6 (it used to be 5 but this year there's one more, which means the plants are propagating).

Some photos