Quote:
Originally Posted by BillC  Warm = 68`F to 75`F night average. This equates to 20'C to 25'C. This information from Jay's Internet Orchid Species Photo Encyclopedia on the culture of your plant. |
Yeah the temp ranges on Jay's are pretty messed up though. I wouldn't use them. A orchid that requires a minimum winter nighttime temp of 75F, that's a hot growing orchid, no doubt. Jay's IOSPE isn't intended (by his own admission) to be an authoritative source.
As I previously posted, the commonly accepted tamp ranges are:
Cold - 50F or below (10C or below) minimum temp
Cool - 50-55F (10-13C) minimum temp
Intermediate - 55-65F (13-18C) minimum temp
Warm - 65-70F (18-21C) minimum temp
Hot - above 70C (above 21C) minimum temp
These are the ranges I see in most orchid growing books and with minor variations are the ones commonly accepted by authors and experts.