How much cold can warm growing orchids take?

[King_of_orchid_growing:)]

I'll make a few recommendations you can try out for our cooler temperatures outdoors.

Ascocenda
Neofinetia
Neostylis
Opsistylis
Sederea
Vanda species (the cooler growing ones - like your Vanda coerulea, there are others too)

[caesium]

Thanks for all the help guys!
I'll need to find a thermometer. Do places like Home Depot sell min/max thermometers? There's no way I will be able to get it in time if I order it online. I will be moving the warm growing orchids inside, problem is they won't be getting a lot of light. At least the phals will be happy and its only for a few weeks.

King of Orchid Growing, I've had my Mokara for 8 years, 5 of which where spent outdoors in the summer and in the living room for winter. Even in the cool coastal SoCal weather my Mokara is one of my best bloomers. Thanks for the suggestions. I have all of those except for the Opsistylis.

[Jerry Delaney]

I agree with most that a few nights at the cooler temps isn't likely to cause any permanent damage. Like they point out, it's the inside temp that counts. You can get a min/max digital thermometer at Lowes or Walmart for under $10 and it's amazing just how accurate the little buggars are! If your greenhouse isn't too large, you might consider buying an inexpensive electric heater to help out at night until your other heater arrives.