Rating scale used to evaluate color of pin oaks (after Himelick and Himelick 1980).
| Scale | Leaf description |
|---|---|
| 10 | extremely dark green, not normal |
| 9 | very deep green, darker than normal for most species |
| 8 | deep green, normal for some species |
| 7 | green, normal for many species (normal for pin oaks) |
| 6 | somewhat off-color, not truly chlorotic |
| 5 | yellowish green |
| 4 | golden yellow |
| 3 | pale yellow to ivory, sometimes scorched along the margins, some dieback |
| 2 | dwarfed, curled, wither, extensive dieback |
| 1 | extreme symptoms, nearly dead |