R. 'Simplon'
Azalea Hybrid
| Hybridized By | Frei, H. |
| Seed Parent | R. yedoense var yedoense |
| Pollen Parent | ? |
| Introduced | 1970 |
| 10 Year Height | 200 cm. (7ft.) |
| Bloom Time | midseason |
| Flower | funnel-shaped |
| Predominant Colour | ? |
| Leaves | narrowly ovate |
| Winter Foliage | ? |
| Hardiness | ? |