Thinking about buying a Catt with some doubts

[rbarata]

How cold does it get in your area?
I live in Los Angeles with a warm mediterranean climate, and all my Cattleyas are grown outside in dapple shade. Most, not all, Cattelyas can take it down to about 10 c in the winter, as long as day time temp is around 20 c or so.

I think it's too cold for Catts. The coldest days we get between 26 to 50º F (-3 to 10 ºC). But my window, because it's exposed to sun, the room is around 20 to 23 without any heating on and maybe around 18 during the night.