Digging up a 2-4 inch caliper tree by hand on your own is possible, but difficult and time consuming if you don't have the equipment or experience. it ideally involves a curved spade to separate the soil ball from the surrounding soil and set of hooks and ropes to pull the soil ball out of the soil. In addition tree spades can dig much larger soil bals than by hand. For every 1" of caliper (how wide the trunk is at one foot off the ground) the tree is you need 10" of width on the soil ball. (or 1 cm to 10 cm) Anything over 30-36" soil ball is impractical to do by hand.
"Caliper / Diameter [of soil ball recomended.]
1.25/18
1.5/20
1.75/22
2/24
2.5/28
3/32
3.5/38
4/42
4.5/48
5/54
6/60
7/70
8/80
9/90"
Root pruning is good (you can do it yourself fairly easily with a long spade, or again to someone with a tree spade it is a faster process) to increase root density within the soil ball, if you do that, prune the roots now, and transplant in spring a couple weeks before the buds break dormancy, keep it well watered for all next year.
"Caliper / Diameter [of soil ball recomended.]
1.25/18
1.5/20
1.75/22
2/24
2.5/28
3/32
3.5/38
4/42
4.5/48
5/54
6/60
7/70
8/80
9/90"
Root pruning is good (you can do it yourself fairly easily with a long spade, or again to someone with a tree spade it is a faster process) to increase root density within the soil ball, if you do that, prune the roots now, and transplant in spring a couple weeks before the buds break dormancy, keep it well watered for all next year.
Source(s):
Davidson, Harold, Roy Mecklenburg, and Curtis Peterson. (2000) "Nursery management:Administration and Culture" 4th ed. Upper Saddle River, NJ: Prentice Hall
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