do aerial roots avoid light?

[DirtyCoconuts]

So i had a conversation with someone about vanda roots and he told me that they grow away from light so they must not like it...i was confused bc i have thought that many orchid photosynthesize through their roots and i had never thought of vanda roots are growing in any direction at all.


I went home and looked at my vanda area and sure enough, overwhelmingly growing to the house as opposed to the yard.

BUT, i realized that this much more likely was due to the fact that the house side is cooler and thus moister and they were probably just growing to the moisture rather than away from the light.

thoughts?

Brighter yard side
Plants and animals by J Solo, on Flickr


Moist house side

Plants and animals by J Solo, on Flickr