I definitely am no expert on this subject but have a couple observations of my own. As for aerial roots should remain aerial, when I repot my Phals that have roots hanging over the edge of pot, I always put them back in the pot and cover with bark mix. They grow big, fat and green. No longer aerial. Don't know what this means except roots of some spp seem to adapt to new environment.
How would you propose testing this hypothesis?
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Ross
http://orchids-ross.blogspot.com/
I don't do most Dendros or large, "floofy orchids". For me it's minis (like Angraecoides), Masdies, Paphs, and others that crept in somewhere along the line. See my orchid list for complete collection (usually not current.)
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