R. 'Signal Horn'
Rhododendron Hybrid
| Hybridized By | Nearing, G.G. |
| Seed Parent | R. 'Atrosanguineum' |
| Pollen Parent | R. 'Goldsworth Yellow' |
| Introduced | 1962 |
| 10 Year Height | 120 cm. (4ft.) |
| Bloom Time | midseason |
| Flower | funnel-shaped |
| Predominant Colour | ? |
| Leaves | elliptic |
| Winter Foliage | ? |
| Hardiness | ? |
| Status | IRRC registered. |