R. 'Buttercup'
Azalea Hybrid
| Hybridized By | Waterer (Bagshot) | Surrey | England, 1939 |
| Azalea group | Knap Hill |
| Seed Parent | ? |
| Pollen Parent | ? |
| 10 Year Height | 200 cm. (7ft.) |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |
| Hybridized By | Waterer (Bagshot) | Surrey | England, 1939 |
| Azalea group | Knap Hill |
| Seed Parent | ? |
| Pollen Parent | ? |
| 10 Year Height | 200 cm. (7ft.) |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |