The following names have already been used within the genus and therefore cannot be re-used. This list is not in strict alphabetical order but is sorted including spaces, full stops etc. in row order. To look at other names click on the appropriate first letter.
| J. F. Letts | J. H. Hamilton | J. M. Hamilton | Jack's Favourite |
| Jacob's Coat | Jadah | Jae | James Chapman |
| James Hamilton | Jan | Jan Dekker | Jana |
| Janek | Janet's White | Janice Chapman | Japanese White |
| Jemma | Jenny | Jenuis | Jessika |
| Jette | Jill | Jimmy Dice | Jimmy Dyce |
| Joan Sparkes | Jochen | Johan | Johan Slegers |
| John Chapman | John Charrington | John Denver | John F. Letts |
| John Letts | John Simmerson | Johnson | Johnson's Variety |
| Jos' Lemon | Jos' Whitie | Josefine | Joseph's Coat |
| Josi | Joy Junstone | Joy Vanstone | Julia |
| Juliane | Julie Ann Platt | Julie Bradbury | Julie Gill |
| Junialis | Juno | Justin |
© The Heather Society, 22 December 2009