Minimum Sizes of Balls 
As Recommended by Ornamental Growers Association 
Type of Tree 
(See below) 
1 
2 
3 
4 
5 
Tree 
Height 
Diamete 
r of Ball 
*Tree 
Diam. 
Ball 
Diam. 
18-24" 
11" 
11" 
11" 
10" 
IV 4 -IV 2 " 
18" 
2-3' 
12" 
13" 
13" 
12" 
11 / 2 -P/ 4 " 
19" 
3-4' 
13" 
16" 
15" 
13" 
P/ 4 - 2 " 
21" 
4-5' 
14" 
19" 
17" 
15" 
2-2/2" 
24" 
5-6' 
15" 
22" 
19" 
16" 
2/2-3" 
27" 
6-7' 
17" 
26" 
21" 
18" 
5 
CO 
1 
00 
30" 
7-8' 
19" 
30" 
24" 
20" 
3/2-4" 
35" 
8-9' 
21" 
34" 
27" 
22" 
4-4/2" 
40" 
9-10' 
23" 
30" 
24" 
4/2-5" 
44" 
* Caliper of tree six inches above ground. 
Type 1. Columnar evergreens (Example: Arbor- 
vitae and Columnar Junipers.) 
Type 2. Spreading and broadleaved evergreens 
(Example: Juniperus pfitzeriana, Taxus 
cuspidata, Cotoneaster.) 
Type 3. Broad upright evergreens (Example: 
Spruce, Pine, Hemlock.) 
Type 4. Shrubs and small trees (Example: Vibur¬ 
num, Flowering Crab, Dogwood, Haw¬ 
thorn.) 
Type 5. Standard shade trees (Example: Norway 
Maples, Oaks.) 
