| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Sabrina' | Small | Dark-Green | - | - | Unknown | Med-Lavender | - | Bastille, Jocelyne | --NR-- |
| 'Saishu Jima' | Small | Med-Green | - | - | Unknown | Deep-Purple | August | Unknown & Ruh, Peter | .2002 .2018 |
| 'Saizaki' | Small | - | - | - | Nat-Sport | Deep-Purple | September | Unknown | --NR-- |
| 'Saw Mill' | Miniature | Light-Green | - | - | Hybrid | Pale-Lavender | July | Malloy, Alex | .1999 |
| 'Scimitar' | Medium | Blue/Green | - | - | Hybrid | - | July into August | Tucker, Jeff-NC | .2016 |
| 'Shall We Dance' | Medium | Dark-Green | Streaked | Yellow | Nat-Sport | Med-Lavender | July into August | Ward, Dr Dick & Jane | .2012 |
| 'Sharon's Choice' | Small | Med-Green | Streaked | Yellow | Hybrid | - | July into August | Hicks, Gerry | .2014 |
| 'She's a Dancer' | Medium | Blue/Green | Marginal | White | Unknown | - | June into July | Wasitis, Chick | .2011 |
| 'Shimmers in the Moonlight' | Small | Blue/Green | - | - | Hybrid | Near-White | July into August | Kwick, Charles | .2017 |
| 'Shirofukurin Shikoku' | Medium | Light-Green | Marginal | Green | Unknown | Med-Lavender | August to September | Unknown | --NR-- |
| 'Shironakafu Saikoku Iwa' | Miniature | Med-Green | Medial | Yellow | Unknown | - | - | Unknown | --NR-- |
| 'Shoehorn' | - | Med-Green | - | - | Unknown | - | June into July | Freeman, Franc & Sally | .2008 |
| 'Silly String' | Medium | Blue/Green | - | - | Hybrid | Light-Purple | July into August | Hansen, Hans & Walters Gardens | .2018 |
| 'Silver Twist' | Small | Blue/Green | - | - | Unknown | Pale-Lavender | - | Yinger, Barry | --NR-- |
| 'Singularity' | Small | Dark-Green | - | - | Hybrid | Pale-Lavender | June into July | Bartley, J. | .2017 |
| 'Sizzle' | Miniature | Med-Green | Medial | Yellow | Hybrid | Med-Lavender | - | King, Jim | --NR-- |
| 'Slick Chick' | Small | Med-Green | - | - | Unknown | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Slim Shady' | Small | Blue/Green | - | - | Nat-Sport | - | - | German, Ellen | --NR-- |
| 'Smiling Sailor' | Small | Med-Green | Medial | White | Unknown | Light-Purple | July | Seaver, Charles | .1996 |
| 'So Nice' | Medium | Med-Green | Streaked | Yellow | Hybrid | Near-White | July | Ward, Dr Dick & Jane | .2015 |
| 'Spartan Arrow' | Small | Med-Green | - | - | Hybrid | Light-Purple | July | Goodwin, Randy | .2000 |
| 'Sporty' | Miniature | Light-Green | Streaked | Yellow | Hybrid | Pale-Lavender | July | Elslager, Ed | .2004 |
| 'Sprite' | Medium | Dark-Green | Streaked | Yellow | TC Sport | - | July into August | Ward, Dr Dick & Jane | .2012 |
| 'Squiggles Green' | Small | Med-Green | - | - | Nat-Sport | Med-Lavender | July | Wade, Van | --NR-- |
| 'Starfish' | Miniature | Light-Green | Streaked | Dark Green | Unknown | - | - | Bastille, Jocelyne | --NR-- |
| 'Streakin in Georgia' | Small | Light-Green | Streaked | Yellow | Unknown | Med-Lavender | - | Thaubald, Ed | --NR-- |
| 'Streaking Sandy' | Small | Med-Green | Streaked | Yellow | Nat-Sport | Med-Lavender | July into August | Freeman, Franc | .2012 |
| 'Stringed Beans' | Small | Med-Green | - | - | Unknown | - | - | Goodwin, Randy | --NR-- |
| 'Surfboard' | Large | Med-Green | Marginal | Yellow | Hybrid | - | July into August | Graves, Butch | .2016 |
| 'Syncopated Harmony' | Medium | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | August | Dean, Don | .2018 |
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