R. 'Calendarb'
Azalea Hybrid
| Hybridized By | Biltmore Gardens |
| Seed Parent | R. arborescens |
| Pollen Parent | R. calendulaceum |
| Introduced | 1955 |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |
| Hybridized By | Biltmore Gardens |
| Seed Parent | R. arborescens |
| Pollen Parent | R. calendulaceum |
| Introduced | 1955 |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |