Vandas don't like to stay dry for more than 1 - 2 weeks. I can get away with letting them go for that long because I grow them potted in medium grade coconut husk chips (it's also possible to use large grade coconut husk chips) with a pot that has lots of air slots.
If you have any Vandas left, you have to pay attention to the roots and how long they're staying wet. When they're bright green along the length of the roots, they're still wet and don't need to be watered. If they dry out, they revert back to being a shiny white (if they're not stained brown by tannins from your potting medium). If the roots are staying wet for longer than 2 - 3 days, you may want to consider airing them out a little until they dry completely.
Most Vandas grow intermediate to warm (65 F - 95 F/18.3 C - 35 C).
Lighting should be bright indirect light.
Allow to dry completely before watering again.
If you're using moss to grow your Vandas, I recommend the moss be replaced with medium or large grade coconut chips or medium or large grade bark.
I don't use vase culture to grow my Vandas, so I can't advise on that technique.
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Philip
Last edited by King_of_orchid_growing:); 05-12-2023 at 06:28 PM..
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