Sonja-the cold weather we had was in the teens and twenty's and lasted several weeks. We don't usually have cold spells that last that long here. Not sure exactly how long after the cold that I noticed the damage, maybe a week or so?
I thought it looked like mite damage as well, but I have never seen them on any of my orchids. Aren't you able to see mites under magnification?
I have looked over both plants very well and don't see any sign of them. What would tell tale signs be? I did have a problem with brown scale a while back though.
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