I have my orchid outside for the summer. At what nighttime temperature should I bring it in?
Certified GKH Gardening Expert
That largely depends on the type of orchid it is. Vanilla orchids can die below 55 degrees F. whereas common phalaenopsis have been known to survive 40's Here is an article for more information: http://staugorchidsociety.org/PDF/ColdToleranceofOrchidsbySueBottom.pdf