| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'American King of the Woods' | Giant | Blue/Green | | | Hybrid | Near-White | July | Wade, Van | .2007 |
| 'Betsy King' | Medium | Med-Green | | | Hybrid | Deep-Purple | | Williams, Frances | .1986 |
| 'Fragrant King' | Large | Dark-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | August | van den Top, Jan | --NR-- |
| 'King Cobra' | Medium | Light-Green | | | Hybrid | Pale-Lavender | June into July | Scheer, Alttara & Gilligan, Madelon | .2015 |
| 'King Crimson' | Medium | Med-Green | | | Unknown | | | Unknown | --NR-- |
| 'King Croesus' | Large | Yellow | | | Hybrid | Pure-White | July | Malloy, Alex | .2003 |
| 'King David' | Medium | Blue/Green | | | Hybrid | Near-White | July into August | Zolock, Steve & Sarah | .2001 |
| 'King Edward' | Medium | Dark-Green | | | Unknown | | | Crockett, Clyde | --NR-- |
| 'King Edward the Second' | | | | | Unknown | | | Unknown | --NR-- |
| 'King James' | Large | Med-Green | | | Hybrid | Near-White | June into July | Krossa, Gus & Ruh, Peter | .1992 |
| 'King Lizard' | Large | Dark-Green | | | Hybrid | Light-Purple | July | Rogers, Floyd | .2003 |
| 'King Michael' | Giant | Med-Green | | | Hybrid | Near-White | June | Krossa, Gus & Summers, Alex & Ruh, Peter | .1992 |
| 'King Midas' | Large | Med-Green | Marginal | Yellow | Nat-Sport | Near-White | July | Unknown | --NR-- |
| 'King of Spades' | Medium | Dark-Green | | | Hybrid | Med-Lavender | August to October | Beilstein, Doug & Mardy | .2007 |
| 'King of the Hill' | Giant | Blue/Green | Streaked | Yellow | Hybrid | Near-White | July into August | Elslager, Ed | .2005 |
| 'King Oil' | Medium | Yellow | | | Hybrid | | | Beilstein, Doug & Malloy, Alex | --NR-- |
| 'King Richard' | | - | - | - | Duplicate | - | - | Duplicate Name | |
| 'King Tucker' | Giant | Dark-Green | | | Hybrid | | August to September | Kwick, Charles | .2016 |
| 'King Tut' | Large | Yellow | | | Hybrid | Near-White | June into July | Harshbarger, Gretchen | .1982 |
| 'King's Adversary' | Large | Blue/Green | Marginal | Yellow | Hybrid | | | King, Herb & Gladys | --NR-- |
| 'King's Black Knight' | Large | Dark-Green | | | Hybrid | Pale-Lavender | July into August | King, Herb & Gladys | .2006 |
| 'King's Mysterious Lady' | Small | Yellow | | | Unknown | | | King, Herb & Gladys | --NR-- |
| 'King's Sir Percival' | Medium | Blue/Green | | | Unknown | Near-White | | King, Herb & Gladys | --NR-- |
| 'King's Veiled Beauty' | Medium | Light-Green | Streaked | Yellow | Nat-Sport | | | King, Herb & Gladys | --NR-- |
| 'Kingsize' | Giant | Dark-Green | | | Nat-Sport | Pale-Lavender | June | Van Eechaute, Danny | .2013 |
| 'Kingwood Center' | Medium | Blue/Green | Medial | Yellow | Nat-Sport | Pure-White | July | Applegate, Charles | .1993 .2018 |
| 'Lakeside King Pin' | Giant | Blue/Green | | | Hybrid | Pure-White | June | Chastain, Mary | .2006 |
| 'Lakeside King Richard' | | | | | Unknown | | | Chastain, Mary | --NR-- |
| 'Lakeside Waltz King' | Large | Blue/Green | Medial | White | Unknown | Near-White | June into July | Chastain, Mary | .2005 |
| 'Maya Kingsnake' | Medium | Med-Green | | | Unknown | Light-Purple | August | Scheer, Alttara | --NR-- |
| 'Mountain King' | Large | Med-Green | | | Hybrid | Pale-Lavender | June | Ward, Dr Dick & Jane | .2012 |
| 'Mouse King' | Miniature | Dark-Green | Marginal | Green | Nat-Sport | Med-Lavender | June | Ward, Dr Dick & Jane | .2014 |
| 'Paradise King' | Large | Blue/Green | | | Unknown | Near-White | June into July | Fransen, Marco | --NR-- |
| 'Pe King' | Medium | Light-Green | | | Unknown | - | - | Unknown | --NR-- |
| 'Silver King' | Large | Blue/Green | | | Unknown | Near-White | June into July | Plater-Zyberk, Maria | --NR-- |
| 'Sky King' | Medium | Med-Green | | | Hybrid | Med-Lavender | July into August | Purvis, Owen & Sue | .2009 |
| 'Stephen King' | Medium | Med-Green | | | Unknown | Light-Purple | June into July | Scheer, Alttara | --NR-- |
| 'The King' | Large | Med-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July | Schwarz, Jim | .2007 |
| 'The Sun King' | Large | Yellow | | | Unknown | Near-White | July | O'Harra, Russ | .1999 |
| 'Thy Kingdom Come' | Medium | Med-Green | | | Unknown | | June into July | Silvers, Bill | .2012 |
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