Yellow Spotting on Vanda
Wondering if anyone can help me figure out what is going on with this vanda. It’s in a tree near three others and the others don’t have this issue (which just started). It’s in spike. Someone suggested to wipe the spots with a wet cotton ball to check for mites. I did this and it was clear. Any ideas? The backside of the plant has the yellowing but not nearly as much as the front in the photos. It is on one leaf of another vanda nearby both are in spike.
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