Does your garage have any natural light coming in? A lot of things that get put in the garage go in and out depending on the weather. There's a lot of back and forth during the months that can have frost. Depends on the plant. Some can tolerate temps just below freezing, others have that as a definite cutoff. I'd expect Callisia repens to be very frost sensitive not tolerating any below 33F temps. Some plants do well as long I adhere to what I know they can tolerate in the way of cold temps, but some look rough at the end of winter no matter what. I have a glass front porch and for plants I don't intend to haul in and out all the time get put there, but some don't love that either. And it's narrow, so if they have just grown too large it has to be the garage. The garage is unheated, but so far it has never fallen below the mid 30s. I have set up a work light and plugged in a small electric heater on occasions of really cold spells that have a long duration, but not too often. I'm thinking the Callisia is a candidate for the porch.
