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.
| Laarne | Lady Maithe | Lambstails | Lammerburn |
| L'Ancresse | Lanulosa | Laphroaig | Laphroig |
| Larissa | Larrisa | Late Crimson | Late Crimson Gold |
| Late Pink | Late Purple | Late Red | Late White |
| Late White Gold | Laura | Laurentine | Lavender Cloud |
| Leila | Lemon Drop | Lemon Gem | Lemon Jam |
| Lemon Queen | Leon | Leonie | Leprechaun |
| Leslie Slinger | Leslie Sparkes | Lewis Lilac | Lianne |
| Libra | Liebestraum | Lightness | Lila |
| Lilac Beauty | Lilac Elegance | Lilac Spire | Liliane |
| Lime Glade | Lime Gold | Limelight | Lisa |
| Lissi | Little Apple | Little Ben | Little Gem |
| Little John | Little Robbert | Little Robin | Llamedos Lady |
| Llanbedrog | Llanbedrog Pink | Llanbedrog Pride | Loch Turret |
| Loch-na-Seil | Logan House | Lonĺ | London Pride |
| Long Turret | Long White | Longfellow | Loni |
| Loni Kircher | Low Low | Lucienne | Lukas |
| Lusanne | Lusille | Lumsdaine | Luna |
| Lüneberg Heath | Lyall's Late White | Lydia | Lyle's Green White |
| Lyle's Late Green | Lyle's Late White | Lyle's Surprise | Lyndon Proudley |
© The Heather Society, 13 January 2007