On Nov 18, 7:35*am, YvonneD wrote:
What is the lowest night time temp that orchids can tolerate? *I have
phals in front of a large window. *They get morning sun only but at
this time of year the sun is fairly weak.

I have the daytime temps at 69 and night at 67. *That's one degree
lower than usual. *Is that OK?

thanks

Orchids can tolerate fairly low temperatures as long as it's not for
long periods of time. I've heard that Phals can telerate 40+ temps and
survive. But be careful. I once took a phal to photograph it in the
snow and it died shortly afterwards. Study up on the different species
since some can survive colder temperatures than others. It just
depends on their natural growing region