| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'I'll Have Another' | Medium | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | August | Silvers, Bill | .2012 |
| 'La Vista' | Small | Med-Green | Medial | White | Sport | Pale-Lavender | June into July | Walters Gardens | .1988 |
| 'Lakeside A Go Go' | Small | Dark-Green | Medial | White | Hybrid | Pale-Lavender | July | Chastain, Mary | .2003 |
| 'Lakeside Alex Andra' | Medium | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | June into July | Chastain, Mary | .2002 |
| 'Lakeside Beach Bum' | Medium | Blue/Green | - | - | Unknown | Near-White | July | Chastain, Mary | .2001 |
| 'Lakeside Bugaboo' | Miniature | Med-Green | Marginal | Yellow | Unknown | Pale-Lavender | June into July | Chastain, Mary | .2000 |
| 'Lakeside Bug's Ear' | Small | Med-Green | Marginal | Yellow | Unknown | - | - | Chastain, Mary | --NR-- |
| 'Lakeside Cha Cha' | Medium | Light-Green | Marginal | White | Hybrid | Pale-Lavender | July | Chastain, Mary | .1994 |
| 'Lakeside Chill Factor' | Medium | Blue/Green | Marginal | White | Unknown | - | - | Chastain, Mary | --NR-- |
| 'Lakeside Doodad' | Miniature | Med-Green | Medial | White | Unknown | Light-Purple | July | Chastain, Mary | .1995 |
| 'Lakeside Dot Com' | Miniature | Dark-Green | Medial | White | Unknown | Light-Purple | August | Chastain, Mary | .1999 |
| 'Lakeside Ebony Echoes' | Small | Dark-Green | - | - | Hybrid | Deep-Purple | July | Chastain, Mary | .2002 |
| 'Lakeside Fancy Pants' | Giant | Blue/Green | Marginal | Yellow | Unknown | Near-White | June into July | Chastain, Mary | .2005 |
| 'Lakeside Heavy Herbert' | - | - | - | - | Unknown | - | - | Chastain, Mary | --NR-- |
| 'Lakeside Hoola Hoop' | Medium | Med-Green | Marginal | White | Unknown | Pale-Lavender | July | Chastain, Mary | .2003 |
| 'Lakeside Indigo Go' | - | Blue/Green | - | - | Unknown | Near-White | - | Chastain, Mary | --NR-- |
| 'Lakeside It's Colorific' | Medium | Blue/Green | - | - | Hybrid | - | - | Chastain, Mary | --NR-- |
| 'Lakeside Jazzy Jane' | Small | Med-Green | Marginal | White | Hybrid | Near-White | July | Chastain, Mary | .2002 |
| 'Lakeside Khum Kaw' | Giant | Med-Green | - | - | Hybrid | Near-White | July into August | Chastain, Mary | .2006 |
| 'Lakeside Legal Tender' | Small | Med-Green | Marginal | White | Unknown | Light-Purple | July into August | Chastain, Mary | .1999 |
| 'Lakeside Little Tuft' | Small | Med-Green | Medial | White | Unknown | Light-Purple | July | Chastain, Mary | .1997 |
| 'Lakeside Little Vamp' | Miniature | Light-Green | - | - | Hybrid | Pale-Lavender | June | Chastain, Mary | .2006 |
| 'Lakeside Meter Maid' | Medium | Med-Green | Medial | White | Sport | Pale-Lavender | July | Chastain, Mary | .1998 |
| 'Lakeside Paddywack' | Small | Dark-Green | Medial | White | Sport | Light-Purple | July | Chastain, Mary | .1996 |
| 'Lakeside Prissy Miss' | Small | Med-Green | Marginal | White | Hybrid | Pale-Lavender | July | Chastain, Mary | .1997 |
| 'Lakeside San Ho Ta' | Large | Light-Green | - | - | Hybrid | Pale-Lavender | June into July | Chastain, Mary | .2006 |
| 'Lakeside Slick Chick' | Small | Med-Green | Marginal | White | Hybrid | Pale-Lavender | July into August | Chastain, Mary | .2004 |
| 'Lakeside So Ho Baby' | Miniature | Med-Green | Marginal | - | Unknown | - | - | Chastain, Mary | --NR-- |
| 'Lakeside Twiddle Dee' | Small | Light-Green | - | - | Hybrid | Light-Purple | July into August | Chastain, Mary | .1996 |
| 'Lakeside Un Huh' | Giant | Blue/Green | - | - | Unknown | Near-White | June into July | Chastain, Mary | .2004 |
| 'Lakeside Whizzit' | Miniature | Med-Green | Medial | White | Sport | Light-Purple | July | Chastain, Mary | .2005 |
| 'Lakeside Zesty Zeno' | Medium | Med-Green | Marginal | Yellow | Unknown | Pale-Lavender | July into August | Chastain, Mary | .2004 |
| 'Lakeside Zing Zang' | Small | Med-Green | Streaked | White | Sport | Light-Purple | July | Chastain, Mary | --NR-- |
| 'Lakeside Zinger Supreme' | Small | Med-Green | Streaked | White | Sport | Light-Purple | July | Chastain, Mary | --NR-- |
| 'Lap Dance' | Miniature | Blue/Green | - | - | Hybrid | Light-Purple | June into July | Johnson, Greg | .2004 |
| 'Lapdance' | Giant | Med-Green | Medial | White | Sport | Pale-Lavender | July | Karbula, Steve | --NR-- |
| 'Laugh Out Loud' | Giant | Blue/Green | Medial | Yellow | Sport | Near-White | June into July | Silvers, Bill | .2013 |
| 'Leapin' Lizard' | Medium | Med-Green | - | - | Hybrid | - | August to September | Beilstein, Doug & Beilstein, Mardy | .2012 |
| 'Lederhosen' | Medium | Blue/Green | - | - | Unknown | Light-Purple | June into July | Benedict, Dr Ralph (Herb) & Benedict, Dorothy & Kuenster, Rod | .2010 |
| 'Lemontini' | Medium | Yellow | - | - | Hybrid | - | August to October | Zilis, Mark | .2009 |
| 'Leopard Frog' | Medium | Yellow | Streaked | Splotches | Sport | Pale-Lavender | July | Goodwin, Randy | .2000 |
| 'Les Dents de la Mer' | Miniature | Med-Green | - | - | Unknown | Pale-Lavender | - | Bastille, Jocelyne | --NR-- |
| 'Lespedeza Gibralter' | Large | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Let's Streak' | Medium | Med-Green | Streaked | Yellow | Unknown | - | - | Unknown | --NR-- |
| 'Lickity Split' | Medium | Yellow | Streaked | White | Hybrid | - | - | Westberg, Jim | --NR-- |
| 'Like Butta' | Medium | Yellow | - | - | Hybrid | Pale-Lavender | July | Nyikos, Frank | .2001 |
| 'Lime Slam Bang' | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Limestone Lover' | Medium | Dark-Green | - | - | Hybrid | Near-White | August to October | Schulz, Ed | .2002 |
| 'Limey Lisa' | Small | Dark-Green | - | - | Hybrid | Light-Purple | July | Zumbar, Wm & Walek, Kevin | .2009 |
| 'Lipstick Blonde' | Small | Yellow | - | - | Hybrid | Pale-Lavender | July into August | Van Eechaute, Danny | .2012 |
| 'Lipstick Sunset' | Medium | Yellow | - | - | Hybrid | Light-Purple | July into August | Dean, Don | .2018 |
| 'Little German Sauerkraut' | - | - | - | - | Unknown | - | - | Jentsch, Klaus | --NR-- |
| 'Little Green Griffonage' | Small | Med-Green | - | - | Hybrid | Pale-Lavender | June into July | Chamberlain, Steve | .2005 |
| 'Little Hobber' | Small | Med-Green | - | - | Unknown | Pale-Lavender | July | Terpening, Kent | .2001 |
| 'Little Hottie' | Miniature | Med-Green | Streaked | Yellow | Unknown | - | July into August | Freeman, Franc | .2012 |
| 'Little Ralph' | Small | Dark-Green | - | - | Unknown | Pale-Lavender | July | Stever, Ralph & Hendrickson, Bob | .2002 |
| 'Little Stiffy' | Miniature | Med-Green | Marginal | Creamy White | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Little Tykes' | Small | Dark-Green | Marginal | White | Hybrid | Light-Purple | August | Elslager, Ed | .2005 |
| 'Lizard Lick' | Medium | Dark-Green | - | - | Hybrid | Pale-Lavender | July | Franks, Richard & Solberg, Robert | .2007 |
| 'Lollapalooza' | Large | Dark-Green | Marginal | White | Hybrid | Near-White | July | Elslager, Ed | .1998 |
| 'Long Tail Lights' | Small | Med-Green | Marginal | Yellow | Unknown | Med-Lavender | August to September | Avent, Tony | --NR-- |
| 'Lookin' Pretty' | Small | Med-Green | Marginal | Yellow | Sport | Light-Purple | July | Zilis, Mark | --NR-- |
| 'Lord Crinkleshine' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | Kwick, Charles | .2019 |
| 'Lord Goldridge' | Small | Yellow | | - | Hybrid | Pale-Lavender | July into August | Kwick, Charles | .2019 |
| 'Lord Goldwrinkle' | Small | Yellow | | - | Hybrid | Pale-Lavender | June into July | Kwick, Charles | .2019 |
| 'Lord Manywrinkles' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | Kwick, Charles | .2019 |
| 'Lottie Daa' | Medium | Yellow | - | - | Hybrid | Light-Purple | August | Johnson, Greg | .2004 |
| 'Love You' | Small | Light-Green | Marginal | Yellow | Sport | Med-Lavender | July | Schwarz, Jim | .2011 |
| 'Lover's Leap' | Large | Dark-Green | Medial | White | Hybrid | Pale-Lavender | July | Benedict, Dr Ralph (Herb) | .1995 |
| 'Lovey Dovey' | Medium | Light-Green | Marginal | White | Sport | Light-Purple | July into August | Malloy, Alex | .2002 |
| 'Lunatic Fringe' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Lush Life' | Small | Med-Green | - | - | Hybrid | - | - | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Lusty Mae' | Large | Light-Green | - | - | Unknown | - | - | Scheer, Alttara | --NR-- |
|