R. 'Koster's Brilliant Red'
Deciduous Azalea Hybrid
| Hybridized By | Koster M. & Sons |
| Azalea group | Mollis |
| Seed Parent | R. molle ssp molle |
| Pollen Parent | R. molle ssp japonicum |
| Introduced | 1918 |
| 10 Year Height | ? |
| Bloom Time | midseason |
| Flower | ? |
| Flower Color | ? |
| Fragrance | ? |
| Leaves | ? |
| Leaf persistence | ? |
| Minimum Hardiness | ? |
| Registration | Unknown or not recorded |