Oncidium limminghei weird leaf

[u bada]

I've been struggling with this one for a couple years now, I've heard from many it's a pretty challenging plant... I would say that's normal for a new growth. It'll not quite open for a very long time then all of a sudden open. Roots can form after a leaf gets a certain size but also form after a leaf has fully opened. They are painfully slow growing.

The catch is they cannot get too much water but can't dry out completely either. I just rotted out two leaves that took a year to form because I didn't realize they were sitting wet too long. However, if they dry out for too long that'll desiccate the roots. That looks like too much moss to me, most specimens I'm seen happiest are growing on mount directly, although I wouldn't mess with it too much as it doesn't like roots to be messed with. your watering schedule is probably fine if you let it almost dry out.

I would agree to bumb up the light to 2000 fc, the mottling of the leaves would be prominent when given proper light levels. But don't give to high... again everything in moderation with this one.