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  #1  
Old 07-13-2020, 05:30 PM
MJG MJG is offline
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Red spots on maxillaria elatior Female
Default Red spots on maxillaria elatior

Any idea what these red spots could be on my maxillaria elatior? They are decidedly RED! There are several other leaves yellowing without red spots. I don't know if that's normal die-off, or if some sort of blight is moving in. Thanks!
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Old 07-13-2020, 08:27 PM
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It's probably pigment from fungi that feed on dead plant matter. A lot of fungi produce chemicals that we see as colored, though the fungus probably doesn't intend them for that purpose.
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Old 07-14-2020, 12:39 PM
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Originally Posted by estación seca View Post
It's probably pigment from fungi that feed on dead plant matter. A lot of fungi produce chemicals that we see as colored, though the fungus probably doesn't intend them for that purpose.
ES, I am convinced by now that you know everything about orchids and probably a lot of other subjects.

It sounds like if it's just a fungus that feeds on dead plant matter, then I don't need to worry about it. Is that correct?
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Old 07-14-2020, 01:01 PM
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I don't know much at all, compared to how much there is to know. But I'm probably a lot older, and I still remember things.

Most leaves of all types of plants get all types of weird spots when they're in the process of normal dying. It's even more accentuated in humid environments. Once you get more orchid growing under your belt you will have seen this sort of thing happen a lot.

Fungi that feed on dead or dying plant material almost never attack living tissue. Yes, it is correct you don't need to worry about fungi that feed on dead or dying plant material. You should ask yourself why the dead or dying plant material is there, however, and you should ask yourself whether maybe the roots or leaves are being kept too wet or humid. The answer might be, yes, they are appropriately wet and humid, but you need to ask.
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