R. 'Excelsior'
Rhododendron Hybrid
| Hybridized By | Heinje, D. |
| Seed Parent | R. degronianum ssp yakushimanum |
| Pollen Parent | ? |
| Introduced | 1981 |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Flower Color | ? |
| Fragrance | ? |
| Leaves | ? |
| Leaf persistence | ? |
| Minimum Hardiness | ? |
| Registration | Unregistered |
