R. 'Grandma Barbara'
Rhododendron Hybrid
| Hybridized By | Unknown |
| Seed Parent | R. macrophyllum |
| Pollen Parent | ? |
| Introduced | 1972 |
| 10 Year Height | 200 cm. (7ft.) |
| Bloom Time | midseason |
| Flower | openly funnel-shaped |
| Predominant Colour | ? |
| Leaves | elliptic |
| Winter Foliage | ? |
| Hardiness | ? |
| Status | IRRC registered. |