Ahh you are so right…unless you are presented with a once-in-a-lifetime chance. There have been 20 azalea bushes surrounding the flagpole in the middle of “the Circle” at Ole Miss since Jesus was a baby. Really they are at least 40 or 50 years old. They are tearing up the concrete and brick there to put in some fancier brickwork, and–alas–the azaleas had to go.
They were being given or thrown away, so my DH got dibs on them. We came home with 16!! 2 have gone to a friend, and 2 more are promised to another.
We have only gotten 5 into their new places so far, and the rest are happily drowning in a water-filled trench until we can squeeze that 25th hour in somewhere.
If you can, wait until early winter, but if not, try root pruning a month or more before moving day. Also water water water for a few days prior. Move in the evening, and be prepared to lose a few.