R. 'Happy Day'
Rhododendron Hybrid
| Hybridized By | Lyons, M.W.. Eugene, Oregon, USA, 1971 |
| Seed Parent | R. 'Lady Clementine Mitford' |
| Pollen Parent | R. 'Ladybird Group' |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ovate |
| Winter Foliage | ? |
| Hardiness | ? |
| Status | IRRC registered. |