| Cultivar | Bush formz |
| Alapaha | 2.4 b |
| Baldwin | 2.8 a |
| Brightwell | 2.9 a |
| Climax | 2.4 b |
| Ira | 2.8 a |
| Montgomery | 3.4 a |
| Onslow | 2.4 b |
| Powderblue | 2.4 ab |
| Premier | 2.4 ab |
| Tifblue | 2.9 a |
| Yadkin | 3.7 a |
| P-value | <0.0001 |
| Significance | *** |