Cattleya night time temps in California?

[Imperial_Exotics]

Just starting to wonder about my Orchids, with winter starting to close in.

Southern California, it does get really cold at times. But usually one rarely needs a jacket.

I have a ton of Cattleya and Laelia in my greenhouse, it is unheated.

It rained all night long last night, and I noticed this morning that the temps in there were hovering just a hair below 60 degrees. Day time temps are generally decent, the GH is going to add 20degrees to that during the day, so it's just overnight that worries me.

Seems to me I read not below 60 somewhere.

I was thinking that I might need to buy some kind of heater for the GH like, right away? Probably go cheap and buy a space heater from Home Depot to get me by for the moment and set it to go off if temps drop below 60.

Unfortunately, there are FAAAAAR to many plants for me to bring into the house.

Thoughts anyone?


Thanks