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Old 02-12-2018, 03:08 PM
rbarata rbarata is online now
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The lack of sun and outside atmosphere?
I don't grow Vandas but from experience I know that, just because the plants are indoors, that deosn't mean they are protected. There's always a window with a cold air draft, changes in temp between rooms (I have that when I water my plants), etc, etc.
Plus, in winter, as we heat our homes, humidity gets lower so a watering change must happen.
These are only examples.
Meteo data at my city here.
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Old 02-12-2018, 03:43 PM
estación seca's Avatar
estación seca estación seca is offline
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Oh Henry! Male

When mine developed roots like that it was always inadequate watering.

I have also read (in real orchid books written by Vanda experts, not on YouTube) Fusarium fungus looks like this on Vanda roots. I don't think you have this problem, since Fusarium is usually a disease occurring with warm temperatures and high humidity.
It's a dry heat.
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brownish, day, henry, leaves, ragged

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