I live in Singapore, so it's tropical weather all year round. I just can't seem to stop my P x weser (looks more like a sethos now that it's flowered) alive. I had one die about 2 weeks ago. I split the remaining one into 5 pings and placed them under shade, repotted them in a equal mix of sand, peat, perlite and vermiculite. I left them in very shallow trays.
They survived fairly well for 2 weeks and the mother plant even put out 2 flowers. Then, yesterday, one of the smaller ones had mould on its centre and broke apart. Today, I felt the leaves of the mother plant and another plant. The leaves were flimsy and could easily be detached from the centre. I fear the worse, cos this was exactly the case with my first Ping.
I don't understand why this is happening. I took care not to allow the medium to become too wet, which is the reason why (I suspect) my first Ping died. It has been raining everyday here for the past week but the Pings are under shade and the rain never touches them.