I'm trying to figure the best and lowest night temp. to keep my new greenhouse at. I have three denrobiums but lots of vandas and cattleyas in it. Mainly my larger and high light orchids. I checked my book and other info and came up with 55 degrees,lowest for most,but I've gotten differing info from different sources for vanda night temps. One site said never lower then 65 degrees for them. Others say they can handle the 55 or 60 degree range. I'm thinking 60 degrees would be best lowest temp to allow the greenhouse to get down to? Can anybody clear this up for me? Thanks!
