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.
| Kaiser | Kaitlyn | Kalinka | Kapels Gelbe |
| Karin Blum | Karina | Karinja | Karla |
| Katharina | Kaylee | Kees Gelder | Kees Gouda |
| Kenneth | Kermit | Kerrie | Kerstin |
| Keswick | Kindance | Kinglochruel | Kinlochruel |
| Kinlockruel | Kinlokruel | Kir Royal | Kirby White |
| Kirsten | Kirsty Anderson | Kit Hall | Kit Hill |
| Klaudewi | Klaudia | Klaudine | Klaudius |
| Klausi | Klauwina | Knapdale | Knaphill |
| Knospenblüher | Knospenblüher rot | Knospenblüher weiss | Kompakte Melanie |
| Kontrast | Kramer's Findling | Kramer's Red | Kramer's Rote |
| Kramer's Sensation | Kreuzing Kramer | Kristal | Kunzmann's Findling |
| Kuphaldtii | Kupholdii | Kupoldii | Kuppendorf |
| Kynance |
© The Heather Society, 29 September 2008