R. 'Willem Barendtz'
Rhododendron Hybrid
| Hybridized By | Koster M. & Sons. Boskoop, Netherlands |
| Seed Parent | ? |
| Pollen Parent | ? |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |
| Status | IRRC registered. |
| Hybridized By | Koster M. & Sons. Boskoop, Netherlands |
| Seed Parent | ? |
| Pollen Parent | ? |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | ? |
| Predominant Colour | ? |
| Leaves | ? |
| Winter Foliage | ? |
| Hardiness | ? |
| Status | IRRC registered. |