| Kansas Ingleside | R 44 |
| Kashmir White | R 50 |
| Kashmiriana | S, R & R 44 |
| Kashmiriana Alba | R & M 44 |
| Katharine Fay | R 48 |
| Keepsake | R 31 |
| Kharput | R 44 |
| Khedive | S, L 24 |
| King Karl | R 24 |
| Kinglet | R 24 |
| King Tut | R 48 |
| Knysna | R 24 |
| Kochii | S, R & M 44 |
| Korolkowii Atropurpurea | S 33 |