R. 'yakushimanum x May Day'
Rhododendron Hybrid
| Hybridized By | Unknown |
| Seed Parent | ? |
| Pollen Parent | R. 'May Day' |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Flower Color | ? |
| Fragrance | ? |
| Leaves | ? |
| Leaf persistence | ? |
| Plant Hardiness | ? |
| Flower Bud Hardiness |
? |
| Registration | Unregistered |