my feeling you are growing in a pot . Is that so?We export the vanda
in seedling. Did you started from seedling?
look at the link you get an idea how other ppl grow the orchid
http://www.orchidsasia.com/vanda/grow21.jpg
The vanda need 6 feet in height or higher. No height No flower.
The brown stuff you see they cover the plant with is saw dust. I do not recommend you do that. It increases the chances of fungus infection.
Do you know how Vanda Miss Joaquim was discovered? In the soil or dirt.
Make sure you put lot of fertilizer.Our lowest temperature for 30 years
was 25C or 77F.