Hi Doug, I assume you are talking about temperatures in your garage? At 50 F (or 10 C) some trees will begin to wake up. If this happens and there is insufficient daylight you will get, at best, weak and sappy growth. Your trees definitely need daylight. Do you have access to a greenhouse? I don’t know how cold your area gets in the winter but this would offer winter protection and daylight. I don’t think healing in is a good option after doing so much work on them.