I wanted to make it clear that your plants are receiving diffuse light, not no light. That is just not correct.
No additional supplementary light, fine. I completely disagree with the assertion of no light. Ludisia discolor still has chlorophyll. This species' chlorophyll just happens to carry on photosynthesis at a significantly lower light level. Different species of orchids will have different chlorophyll that require a different range of light levels to trigger photosynthesis.
Diffuse light does not = no light.
If you can read without any additional lighting, that isn't no light. A light meter would probably read anywhere between 100 - 500 lumens right where your orchid is growing.
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Philip
Last edited by King_of_orchid_growing:); 06-20-2019 at 03:02 PM..
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