Bare root caliper, tree height and root spread
|
Caliper
(inches)
|
Average
height range (feet)
|
Minimum
root spread (inches)
|
|
.5
|
5-6
|
12
|
|
.75
|
6-8
|
16
|
|
1
|
8-10
|
18
|
|
1.25
|
8-10
|
20
|
|
1.5
|
10-12
|
22
|
|
1.75
|
10-12
|
24
|
|
2
|
12-14
|
28
|
|
2.5
|
12-14
|
32
|
|
3
|
14-16
|
38
|
Source: American Standard for Nursery Stock, ANSI Z60.1 published by American Association of Nurserymen, Washington D.C.