What warmth do orchids own to be grown within? ...
Answers: I leave the semi tropical ones outside during the summer and bring them contained by early October to a conservatory kept at a minimum of 10 Centigrade. This usually works and I attain 2-3 flower spikes in March. The hardy ones I basically put in an unheated greenhouse over winter to stop their pots person blown over.
It depends which orchids you are trying to grow. Depending on the type it can be quite unreliable. The most common scale of temperatures is from in the region of 8degrees C all the method up to 21 degrees C, depends if they are hardy outside orchids or the indoor tropical orchids.