Tree form definitions.
| Rating | Definition |
|---|---|
| Excellent | A clear, strong, and straight leader firmly rooted in the ground. A good level of taper up the stem, and a wide-angled branching structure with even arrangement vertically and radially. |
| Good | A clear leader, possibly slightly crooked or weakened by laterals, even spaced branches, and no major faults in the canopy. |
| Fair | A clear leader, with a possible lean or kink. Asymmetries in the canopy or branch arrangement and possible a slight lean. |
| Poor | No clear leader, with possibly multiple leaders, leaning or a lost leader. Heavy canopy asymmetry. |
| Very poor | No leader or multiple leaders. A heavy lean possibly with very strong canopy asymmetry. Tree may have been vandalized. Candidate for replacement. |