I've never tried an actual fruit tree in a pot, although I currently have two blueberry bushes in pots, but because they are now 3 yrs old and not producing much, I'm transplanting them to my garden when they go into dormancy.
So I don't have any advice or recommendations on bringing them in. Does your garage get any light? I would think they would still need some light, even though they are likely in dormancy. Not sure where you live or if it's possible to bring them out on sunny or not so cold days.
I was thinking that next summer I might do a couple of small lemon and/or lime trees in pots. I think the meyer limes stay small enough to do well.
So I don't have any advice or recommendations on bringing them in. Does your garage get any light? I would think they would still need some light, even though they are likely in dormancy. Not sure where you live or if it's possible to bring them out on sunny or not so cold days.
I was thinking that next summer I might do a couple of small lemon and/or lime trees in pots. I think the meyer limes stay small enough to do well.