Shortening days and cooling temperatures have certain potted plants crying out to be brought indoors. Soon, soon. Subtropical plants, such as bay laurel, rosemary, and fig, tolerate — even enjoy — temperatures below freezing, so cold isn’t the threat, for the next few weeks at least. But the later the evergreen plants come indoors, the more chance that I will have fired up the woodstove. The resulting drier air will shock plants if they’ve recently come in from cool, moist outdoor conditions; leaves will yellow and drop.
As for my poinsettia, staghorn fern, orchids, and other tropical plants, temperatures that dip below freezing could do them in.