As I usual, weather here is going to extremes. We had frost in October, and since then highs at least 60F/15C and lows 45F/7C. The trees have lost their leaves but most of the azaleas are still blooming.
Thursday night the low is 10F/-12C and below freezing day and night for three days. Does that call for bringing them all into the unheated garage? There are a few evergreen with leaves which will come in, but what about the maples and elms? Azaleas?
I would have to rearrange the garage and take a lot of time and that would be inconvenient right now.
I have had below -10 for six weeks in a row inside my greenhouse where I keep the trees in winter. I have maples, chinese elm and azalea amongst a lot of other species. I don't think 3 days below -12 is an issue. It is longer time freezing combined with strong sun I worry about. Usually happens in february and march around here. If I don't shade the trees they suffer from dehydration.