| Factor |
Score |
||||
| 5 |
4 |
3 |
2 |
1 |
|
| Trunk |
Sound and solid throughout |
Minor damage |
Early decay signs |
Extensive decay, hollowness cambium damage |
Same as two, but cross-section is a half circle |
| Crown |
Dense, evenly balanced crown |
Dense, slightly unbalanced crown |
Thin or severely imbalanced crown |
Thin and slightly imbalanced crown |
Thin and severely imbalanced crown |
| Root |
Three or more evenly balanced root flares |
Three or more slightly unbalanced root flares |
Less than three or severely unbalanced root flares |
No root flares & structural root (2 to 15 cm deep) |
Structural roots (>15 cm deep) |
| Structure |
No major limbs missing, broken, or dead no narrow crotches; good radial distribution |
Narrow crotch on a major limb |
One of major limbs is dead or broken |
Two or three major limbs with narrow crotches & one broken or dead major limb |
Two or three major limbs with narrow crotches & broken or dead major limbs |
| Growth |
>15 cm annual twig elongation |
10 - 15 cm annual twig elongation |
5 - 10 cm annual twig elongation |
2 - 5 cm annual twig elongation |
<2 cm annual twig elongation |
| Pest |
No insect or disease problems |
Minor insect or disease problems |
Minor insect & disease problems |
Serious disease or insect problems |
Serious disease & insect problems |
| Life |
>50 years |
30 to 50 years |
20 to 30 years |
10 to 20 years |
<10 years |
| expectancy |