i know a place that lists it as 'somewhat temperature tolerant' although it is from the philippines, it grows at high elevations, so gets some warm and some cool seasonal weather. i could probably grow it outside here, in a sheltered area, like my balcony. they do not mention light at all though, and i must say i am almost completely unfamiliar with this genera. i would try it with my oncidiums? intermediate, and not worry about winter warmth so much.