R. 'Gustav Hacker'
Azalea Hybrid
| Hybridized By | Glaser, K. |
| Seed Parent | R. 'Coelestine' |
| Pollen Parent | ? |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |
| Hybridized By | Glaser, K. |
| Seed Parent | R. 'Coelestine' |
| Pollen Parent | ? |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |