Hey.
I got a masdevallia pumila yesterday that has really red leafs, Is it possible that it has been introduced for to much light?
What is the best way to culture this orchid to recover it's natural green color?
Your guess is as good as mine. I will tell you its a cloud forest dweller found epiphytic on trees. It probably gets lots of diffused light so I would say, yes, try lessening the lighting.
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"We must not look at goblin men,
We must not buy their fruits:
Who knows upon what soil they fed
Their hungry thirsty roots?"