Comparison of growth characteristics of five cultivars of Callery pear after 15 years in the landscape.
| Cultivar | Height (ft.) | Width (ft.) | Average twig growth (in.) | Number narrow crotches | Number lower branches | ||
|---|---|---|---|---|---|---|---|
| 15 yr. | annual | 15 yr. | annual | ||||
| Aristocrat | 36.2 ± 1.6* | 2.9 ± 0.6 | 15.7 + 2.3 | 0.6 ± 0.5 | 16.7 ± 2.5 | 1.5 ± 1.0 | 27.3 ± 7.2 |
| Bradford | 25.0 ± 3.0 | 2.2 ± 0.3 | 15.6 ± 4.0 | 1.8 ± 0.9 | 10.9 ± 1.7 | 4.3 ± 0.5 | 50.3 ± 8.4 |
| Chanticleer | 31.2 + 2.4 | 1.7 ± 1.9 | 14.9 ± 1.8 | 1.4 ± 0.3 | 10.4 + 2.3 | 2.8 ± 1.0 | 45.8 ± 7.5 |
| Fauriei | 31.6 ± 2.3 | 1.7 ± 1.4 | 25.0 ± 2.8 | 2.7 ± 0.8 | 16.3 ± 1.3 | 3.3 ± 1.3 | 32.0 ± 8.5 |
| Rancho | 31.2 ± 3.4 | 2.5 ± 0.9 | 15.0 ± 1.9 | 2.2 ± 0.5 | 10.8 ± 1.6 | 2.5 ± 0.6 | 26.0 ± 6.6 |
| Mean | 31.0 ± 2.5 | 2.2 ± 1.0 | 17.2 ± 2.6 | 1.7 ± 0.6 | 13.0 ± 1.9 | 2.9 ± 0.9 | 36.3 ± 7.6 |
↵* Standard deviation.