Corm Size Classification
Corm sizes are approximately the following diameters:
| Group | Corm diameter |
|---|---|
| Extra | 2” / 5.1 cm or larger |
| 1 | 1” - 2” / 3.8 - 5.1 cm |
| 2 | 1.25” - 1.5” / 3.2 - 3.7 cm |
| 3 | 1” - 1.25” / 2.5 - 3.2 cm |
| 4 | 0.75” - 1” / 1.9 - 2.5 cm |
| 5 | 0.5” - 0.75” / 1.3 - 1.9 cm |
| 6 | under 0.5” / 1.3 cm |
| Group | Corm diameter |
|---|---|
| 1 | 1.18” / 3.2 cm or larger |
| 2 | 0.79” - 1.18” / 2.5 - 3.2 cm |
| 3 | 0.4” - 0.79” / 1.5 - 2.5 cm |
| 4 | 0.3” - 0.4” / 1 - 1.5 cm |