R. maximum 'Summertime'
Species selection of R. maximum
| Selected By | Crown Estate Commissioners |
| Introduced | 1974 |
| 10 Year Height | ? |
| Bloom Time | ? |
| Flower | broadly funnel-shaped |
| Flower Color | ? |
| Fragrance | ? |
| Leaves | oblanceolate |
| Leaf persistence | ? |
| Minimum Hardiness | ? |
| Registration | Unknown or not recorded |
