Quote Originally Posted by Arne View Post
So I talked to a real Vanda specialist about what makes V denisoniana bloom. He mentioned two things, strong light (preferably from all sides) and, very wide temperature difference between day and night.

According to Charles and Margaret Baker the diurnal temperature range for V denisoniana is actually about 25 - 30 degrees F from January to March when it flowers in its natural habitat in Thailand.
Thank you Arne!