fliptop,
I use Fafard 3B mix and I usually add a few worm castings, Azomite, and a handful of perlite to the mix. This tree was purchased as a 25 gal. and was stepped up the next year to a 45 gal., it has been in that pot for over 2 years. I would estimate that the tree is probably 4 to 5 years old.
Mugenia,
I move all my potted trees with a hand truck.