R. 'Queen o' the May'
Rhododendron Hybrid
| Hybridized By | Caledonia Nursery |
| Seed Parent | R. griffithianum |
| Pollen Parent | ? |
| Introduced | 1905 |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |
| Status | IRRC registered. |