Oncidium has splotchy leaves

[Stefus_Prime]

Recently my oncidium has gotten one splotchy leaf with yellowing edges and another leaf has curled up. I've been watering it the same as I always have, and I repotted it today, all of the roots are healthy so I'm not sure what's going on.

[Stefus_Prime]

Also forgot to mention last night that it's a windowsill plant, faces a south window just like my phals and other oncidium, none of which ever had any problems. I'm really at a loss as to what this should be.

Sorry about the sideways pic guys

[kindrag23]

Dont worry mine are always sideways.... I dont think its a huge issue. But I am no expert, my oncid get w/sw light so they get bright light at sun set and are thus far okay. But I am by far no expert.

How long have u had it?
What did you repot it in ie bark moss etc..

Oh and the phal in the back ground is astounding!

[Leafmite]

I wish I could help you but I don't really know what is causing the problem.
Hopefully someone else will help.
My only ideas are:
Fungus, nutrient deficiency/toxicity, root problems, or a reaction due to some chemical.
A few questions, to help with finding a solution: How long have you had this orchid? When was the last time you repotted it? Have you treated it with anything lately? How often do you fertilize?

[WhiteRabbit]

Where on the plant is this happening? Old pbulbs? Bract foliage?

[Stefus_Prime]

I've had the oncidium since June or so, it was potted in a small black container with spagnum moss, I've repotted it in a mix of spagnum moss and coconut husk/fibers. The roots showed no signs of fungus or rot, I've only dosed it with some seaweed fertalizer once and that's about it. The other leaves are super healthy, and a new bulb/leaves sprouted up so I know it's not the entire plant.

---------- Post added at 10:22 PM ---------- Previous post was at 10:21 PM ----------

Originally Posted by WhiteRabbit

Where on the plant is this happening? Old pbulbs? Bract foliage?

Just the leaf, the bulb itself is fine, what is in the pictured is basically the extent of the issue.

---------- Post added at 10:24 PM ---------- Previous post was at 10:22 PM ----------

Originally Posted by kindrag23

D
Oh and the phal in the back ground is astounding!

Thanks! That thing is crazy, I've never trimmed the stems so it's all over the place, it recently sprouted a keiki so I'm pretty thrilled.

[WhiteRabbit]

Is it just foliage on an old pbulb? Is it a leaf on top of the pbulb, or the sides (bract foliage)?

[Stefus_Prime]

Originally Posted by WhiteRabbit

Is it just foliage on an old pbulb? Is it a leaf on top of the pbulb, or the sides (bract foliage)?

It's the main (and only) leaf on one MASSIVE bulb, shoots straight up. Another bulb also has a main leaf that is yellowing and browning at the tip :/ Do the bulbs eventually die off?

[WhiteRabbit]

Pbulbs die eventually, but usually can live a number of years - but, the foliage will die before that. First, the bract foliage (leaves that are on the sides of the pbulbs) die - often not too long after blooming or new growth starting.

The foliage on top of the pbulbs will live longer, but does die after a time.

Does the affected pbulb still have the bract foliage?

[Stefus_Prime]

Here is another picture, each bulb only has the one leaf which shoots straight out.