Oncidium Ornithorhychum spiking but pleated leaves

[stefpix]

Oncidium Ornithorhychum spiking but pleated leaves
Last year I got a small Oncidium ornithorhychum from Oak Hill. It is now spiking! I think the first time it blooms. But many leaves have vertical pleats. I keep it quite moist in net pot inserted in a snug clay pot. Medium is coco chips with some clay pellets, bark pieces and little sphagnum here and there.

My Onc Twinkle, Onc. Rosy Sunset and Onc sphacelathum have no pleated leaves (except the occasional one). Does the Oncidium ornithorhychum need to be kept more moist? I am afraid to kill the roots if I water it more. It is pretty humid here in the summer and now (56% RH). Wonder if some hot days may cause this. It came with a pleated leaf though, so I am also wondering if it may just be genetic.

I attached 3 photos + 1 of the Onc. Twinkle for reference.

[camille1585]

Normally pleating from lack or water/rotten roots is horizontal and accordion like. I have no idea if vertical pleating (which I have never seen) is due to the same thing, or if it's due to something else all together.

[Bud]

leaf pleating can be too much watering or dehydration...after it blooms you need to repot it and look for a sphag ball underneath the plant...hances are that is the main culprit...clean it throroughly and repot it in the media you like(S/H is the best method for this plant so you dont have to guess if it needs watering or not)

[stefpix]

thanks. I think is more or less in the same media / conditions of the Onc Twinkle. the leaves are lighter green so maybe it is getting more light