That minimum low is probably that hour before dawn. Most orchids can take it for brief periods.
My poor orchids are so confused by our yoyo temps...90s last week, 70s this week, back to 90s by Wed. I'm at a loss for what to do with my Catt. dowiana. It's supposed to stay dry and dormant for the winter months, but it has a new 2" growth now, and our winter is months away. Thinking I'll keep it dry and cross my fingers.
