Large yellow areas on 2 phal. leaves

[gjanick2]

I need your help. What are the big yellow areas on two of the phal's leaves? And if you know what it is, please tell me what to do. Thanks!

[Ben_in_North_FLA]

sunburn

[Ray]

Yep. Notice how the pattern is continued on the next leaf. The damage is done; it is entirely internal, so no secondary infection will develop, so do nothing. Eventually, those areas will turn parchmentlike.

Phalaenopsis plants should never see direct sunlight.