R. 'Grand Mystery'
Rhododendron Hybrid
| Hybridized By | Marchant, H., 1988 |
| Seed Parent | R. macabeanum |
| Pollen Parent | ? |
| 10 Year Height | 200 cm. (7ft.) |
| Bloom Time | ? |
| Flower | funnel-campanulate |
| Predominant Colour | ? |
| Leaves | elliptic |
| Winter Foliage | ? |
| Hardiness | ? |
| Status | IRRC registered. |