PSYCHOPSIS MARIPOSA

[Fiona]

Can anybody tell me if the flowering stalks of the Psychopsis Mariposa ever get flowered out and need to get cut back?

The plant has two flowering stalks, one only developed last year. The older stalk flowered profusely in the past, but has not flowered since the new stalk developed. It develops buds, but they never mature, where in the past it developed a flower within a few weeks of the other dropping. As soon as the new stalk developed fully, it stopped flowering.

I have given it commercial orchid food at regular intervals and it is potted in coir chunks, but possibly could do with repotting.