| Cultivar | Reference | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Sadi' | - Singer | Medium | Yellow | - | - | Hybrid | Near-White | June | Nyikos, Frank | .2000 |
| 'Sahara Nights' | - F.R. David | Small | Blue/Green | - | - | Unknown | Med-Lavender | July | Terpening, Kent | --NR-- |
| 'Saint Elmo's Fire' | - John Parr | Medium | Med-Green | Marginal | White | TC Sport | Pale-Lavender | July into August | Solberg, Robert | .1995 |
| 'Salty Dog' | - Foggy Mountain Boys | Medium | Light-Green | - | - | Hybrid | Light-Purple | July | Stadden, Josh | .2003 |
| 'Sandpaper' | - Fozzy | Small | Blue/Green | - | - | Unknown | - | - | Brashear, Carol | --NR-- |
| 'Sara' | - Jefferson Starship | Large | Yellow | - | - | Hybrid | Near-White | June | Kuk, Bob | .1994 |
| 'Satin Doll' | - Duke Ellington & Ella Fitzgerald | Medium | Med-Green | Streaked | White | Hybrid | Pale-Lavender | June | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Satisfaction' | - Rolling Stones | Large | Med-Green | Marginal | Yellow | Sport | Near-White | June into July | Wasitis, Chick | .2000 |
| 'Saturday Night Fever' | - The Bee Gees | Large | Yellow | - | - | Unknown | - | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Save the Last Dance for Me' | - The Drifters | Medium | Light-Green | - | - | Hybrid | Pale-Lavender | July into August | Kwick, Charles | .2017 |
| 'Scarlet Ribbons' | - Harry Belafonte | Small | Med-Green | Marginal | Creamy White | Hybrid | Deep-Purple | August to October | Elslager, Ed | .2002 |
| 'Scheherazade' | - Rimsky Korsakov | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | July into August | Dalton, Jim & Dalton, Meg | .2012 |
| 'Seasons in the Sun' | - Terry Jacks | Giant | Yellow | | - | Hybrid | Near-White | July into August | Hansen, Hans | .2020 |
| 'Secret Love' | - Little Mix | Medium | Blue/Green | Marginal | Yellow | Sport | Light-Purple | August | Van den Top, Jan & Van Eechaute, Danny | .2004 |
| 'Send Your Camel to Bed' | - | Medium | Med-Green | Marginal | Light Green | Sport | Pale-Lavender | July into August | Dammen, Mike | .2018 |
| 'Sentimental Journey' | - Doris Day | Large | Med-Green | Marginal | Yellow | Sport | Near-White | June into July | Johnson, Greg | .2004 |
| 'September Song' | - JP Cooper | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Serendipity Singer' | - Singer | Medium | Med-Green | Medial | Yellow | Sport | Med-Lavender | July | Goodenough, Rick | .2004 |
| 'Sergeant Pepper' | - The Beatles | Medium | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | August | Wasitis, Chick | .2001 |
| 'Seventh Heaven' | - Steve Plunkett | Medium | Med-Green | Marginal | Yellow | Hybrid | Pure-White | July into August | Kulpa, John | .1994 |
| 'Shaboom Shaboom' | - The Chords | Large | Dark-Green | Streaked | Yellow | Unknown | - | - | Purvis, Owen & Purvis, Sue | --NR-- |
| 'Shake My Bootie' | - Music Term | Miniature | Med-Green | Streaked | Yellow | Unknown | - | July into August | Freeman, Franc | .2012 |
| 'Shall We Dance' | - Oscar Hammerstein | Medium | Dark-Green | Streaked | Yellow | Sport | Med-Lavender | July into August | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Shangrila' | - Kinks | Large | Light-Green | Marginal | Yellow | Sport | Pale-Lavender | August to September | Malloy, Alex | --NR-- |
| 'Sharp Dressed Man' | - ZZ Top | Medium | Med-Green | Medial | White | Hybrid | Pale-Lavender | July | Solberg, Robert | .2005 |
| 'She Don't Know She's Beautiful' | - Sammy Kershaw | Large | Yellow | - | - | Unknown | - | June into July | Kwick, Charles | .2016 |
| 'She's a Dancer' | - Music Term | Medium | Blue/Green | Marginal | White | Unknown | - | June into July | Wasitis, Chick | .2011 |
| 'She's a Lady' | - Tom Jones | Small | Blue/Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Shimmy Shake' | - The Beatles | Medium | Med-Green | - | - | Unknown | Pale-Lavender | - | Scheer, Alttara | --NR-- |
| 'Shiny Sonata' | - | Medium | Dark-Green | - | - | Sport | Pale-Lavender | - | Van den Top, Jan | --NR-- |
| 'Short Fat Fanny' | - Larry Williams | Small | Med-Green | Marginal | White | Hybrid | Light-Purple | July | Wasitis, Chick | --NR-- |
| 'Show Stopper' (Claeys) | - Danity Kane | Medium | Med-Green | - | - | Hybrid | Deep-Purple | - | Claeys, Rob | --NR-- |
| 'Showboat' | - Musical Theater | Large | Blue/Green | Marginal | White | Hybrid | Pale-Lavender | July | Lachman, Wm & Lachman, Eleanor | .1993 |
| 'Silence is Golden' | - The Four Seasons | Large | Yellow | - | - | Unknown | - | - | Moore, Jeff | --NR-- |
| 'Silver Moon' | - Michael Nesmith | Large | Dark-Green | Marginal | White | Hybrid | Pale-Lavender | August | Hansen, Hans | .2007 |
| 'Silver Threads & Golden Needles' | - Linda Ronstadt | Small | Yellow | Medial | Creamy White | TC Sport | Light-Purple | July | Anderson, Jim | --NR-- |
| 'Silverado' | - Marshall Tucker Band | Small | Blue/Green | Marginal | White | Sport | Med-Lavender | August to October | Kuk, Bob | .1987 |
| 'Simply Irresistible' | - Robert Palmer | Small | Blue/Green | Marginal | Yellow | Sport | Pale-Lavender | July into August | Wasitis, Chick | .2014 |
| 'Simply Red' | - Rock Band | Medium | Med-Green | - | - | Hybrid | - | - | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Sing Your Camel to Bed' | - | Medium | Light-Green | Medial | Green | Sport | Med-Lavender | July into August | Naylor Creek Nursery | --NR-- |
| 'Singin' the Blues' | - Marty Robbins | Large | Blue/Green | - | - | Hybrid | Near-White | June into July | Beilstein, Doug | .2007 |
| 'Singing in the Rain' | - Gene Kelly | Medium | Med-Green | Marginal | Creamy White | Sport | Pale-Lavender | June into July | Falstad, C.H. & Walters Gardens | .2006 |
| 'Singularity' | - | Small | Dark-Green | - | - | Hybrid | Pale-Lavender | June into July | Bartley, Jennifer | .2017 |
| 'Sister Rose' | - Cornelius Brothers & Sister Rose | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Sky Dancer' | - Acoustic Café | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | August to September | Van Eechaute, Danny | .2003 |
| 'Smash Hit' | - Music Term | Medium | Dark-Green | Medial | Yellow | Sport | Pale-Lavender | July into August | Zilis, Mark | .2012 |
| 'Smooth Operator' | - Sade | Giant | Med-Green | - | - | Unknown | Near-White | June into July | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Snake Eyes' | - Mumford & Sons | Medium | Light-Green | Medial | White | Sport | Pale-Lavender | July into August | Torvinen, Andy | .2005 |
| 'Snowbird' | - Anne Murray | Small | Med-Green | Marginal | White | Unknown | - | June into July | Goodwin, Randy | .2000 |
| 'Soldier Boy' | - Shirelles | Medium | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | June | Smith, Fred | --NR-- |
| 'Solid Gold' | - Music Term | Medium | Yellow | - | - | Hybrid | Pale-Lavender | June into July | Savory, Dennis | .2012 |
| 'Song Sung Blue' | - Neil Diamond | Medium | Blue/Green | Marginal | Green | Hybrid | Pale-Lavender | June into July | Elslager, Ed | .2004 |
| 'Sonny Boy' | - Al Jolson | Large | Dark-Green | - | - | Unknown | - | - | Plater-Zyberk, Maria | --NR-- |
| 'Sophisticated Lady' | - Duke Ellington, Ella Fitzgerald, Tony Bennett | Large | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July | Ward, Dr Dick & Ward, Jane | .2000 |
| 'Southern Blues' | - Music Term | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | McDonell, Harold | .2014 |
| 'Southern Music' | - Music | Medium | Dark-Green | Medial | White | Sport | Pale-Lavender | July | Harris, Robert | --NR-- |
| 'Spike Jones' | - Singer | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | August | Schulz, Ed | .2002 |
| 'Spinners' | - Rock Band | Large | Med-Green | Marginal | White | Unknown | Pale-Lavender | July | British Hosta and Hemerocallis Society | .1988 |
| 'Spinning Wheel' | - David Clayton Thomas | Large | Yellow | Marginal | Blue-Green | Sport | Near-White | June | Seaver, Mildred & Walek, Kevin | .2009 |
| 'Splish Splash' | - Bobby Darin | Medium | Med-Green | Marginal | Yellow | Hybrid | Light-Purple | July | Aden, Paul | .1980 |
| 'Stairway to Heaven' | - Led Zeppelin | Large | Med-Green | Marginal | White | Hybrid | Near-White | August to September | Kuenster, Rod | .2008 |
| 'Stand By Me' | - Ben E. King | Medium | Blue/Green | Medial | Yellow | Sport | Pale-Lavender | - | Fransen, Marco | --NR-- |
| 'Standing Room Only' | - Loretta Lynn | Large | Blue/Green | - | - | Unknown | - | - | Lysne, Rod | .2021 |
| 'Star Bright' | - Children's Song | Medium | Dark-Green | Streaked | Yellow | Unknown | - | - | Unknown | --NR-- |
| 'Star Light Star Bright' | - Children's Song | Medium | Med-Green | Marginal | Yellow | Hybrid | - | - | Terpening, Kent | --NR-- |
| 'Star Spangled Banner' | - Star Spangled Banner | Large | Med-Green | Streaked | Yellow | Hybrid | Near-White | June into July | Elslager, Ed | .2002 |
| 'Stardust' | - Nat King Cole | Large | Yellow | - | - | Hybrid | Pale-Lavender | July | Ward, Dr Dick & Ward, Jane | .1998 |
| 'Stardust Memories' | - Nat King Cole | Medium | Yellow | - | - | Hybrid | Near-White | June into July | Ward, Dr Dick & Ward, Jane | .2014 |
| 'Starlight' | - Taylor Swift | Miniature | Med-Green | Medial | White | Sport | Pale-Lavender | July | Eisel, Mervin | .1973 |
| 'Starry Starry Night' | - Don McLean | Small | Med-Green | - | - | Hybrid | Near-White | July | Wilkins, Dr Jim | .2000 |
| 'Stars and Stripes' | - Stars and Stripes Forever | Medium | Dark-Green | Streaked | White | Hybrid | Pale-Lavender | June into July | Simmering, Ron | .2000 |
| 'Stars and Stripes Forever' | - John Philip Sousa | Small | Blue/Green | Streaked | Yellow | Hybrid | - | - | Malloy, Alex | --NR-- |
| 'Starship' | - Jefferson Starship | Large | Light-Green | Marginal | White | Sport | Pale-Lavender | July | Zilis, Mark | .2004 |
| 'Steely Dan' | - Rock Band | Small | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | Avent, Tony | .2007 |
| 'Stepping Out' | - Joe Jackson | Medium | Blue/Green | Marginal | Yellow | Hybrid | Near-White | June | Vaughn, Kevin | --NR-- |
| 'Still Waters' | - Still Waters Band | Medium | Blue/Green | - | - | Hybrid | - | June | Ward, Dr Dick & Ward, Jane | .2010 |
| 'Sting' | - Singer | Medium | Dark-Green | Marginal | White | Sport | Med-Lavender | July into August | Heemskerk, Gerardus | .2011 |
| 'Stir It Up' | - Bob Marley | Medium | Light-Green | - | - | Unknown | - | - | Scheer, Alttara | --NR-- |
| 'Stitch In Time' | - Smashing Pumpkins | Small | Yellow | Medial | Green | Sport | Pale-Lavender | July | Mortko, Rob | .2004 |
| 'Stormy Weather' | - Lena Horne | Large | Med-Green | - | - | Hybrid | Deep-Purple | July into August | Johnson, Greg | .2004 |
| 'Stranger in the Dark' | - Savatage | Medium | Dark-Green | - | - | Sport | Med-Lavender | July | Fransen, Marco & Fransen, Joyce | --NR-- |
| 'Stringbean' | - Ray Charles | Small | Med-Green | - | - | Unknown | - | - | Cullerton, Walter | --NR-- |
| 'Sugar and Spice' | - The Searchers | Large | Dark-Green | Marginal | Yellow | TC Sport | Pale-Lavender | August | Zilis, Mark | .2003 |
| 'Sugar Babe' | - Stephen Stills | Medium | Dark-Green | Marginal | White | Hybrid | Light-Purple | August | Solberg, Robert | .1996 |
| 'Sugar Blue' | | Medium | Blue/Green | | | Unknown | Med-Lavender | | Fransen, Marco & Fransen, Joyce | --NR-- |
| 'Sultans of Swing' | - Dire Straits | Medium | Blue/Green | Marginal | Yellow | Hybrid | - | - | Philips, Hugo | --NR-- |
| 'Sum Enchanted Evening' | - Rodgers & Hammerstein | Large | Med-Green | - | - | Hybrid | - | - | Goodwin, Randy | --NR-- |
| 'Summer Breeze' | - Seals & Croft | Large | Dark-Green | Marginal | Yellow | TC Sport | Pale-Lavender | July | Zilis, Mark | .1999 |
| 'Summer Concerto' | - Music Term | Medium | Light-Green | Medial | White | Sport | Pale-Lavender | July | Ziarek, Ken | --NR-- |
| 'Summer Melody' | - Dan Mason | Large | Dark-Green | Marginal | Yellow | Hybrid | - | - | Smith, Roger | --NR-- |
| 'Summer Music' | - Music | Medium | Med-Green | Medial | White | Sport | Pale-Lavender | July | Klehm, Roy | .1998 |
| 'Summer Music Gold' | - Music | Medium | Yellow | - | - | Sport | Pale-Lavender | July | Unknown | --NR-- |
| 'Summer Music Streaked' | - Music | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Summer Music Supreme' | - Music | Medium | Med-Green | Streaked | White | Sport | Pale-Lavender | July | Stark, Gunther | --NR-- |
| 'Summer Serenade' | - Benny Carter | Large | Yellow | Marginal | Dark Green | Sport | Near-White | June | Klehm, Roy | .1998 |
| 'Summer Time' | - Ella Fitzgerald | Medium | Dark-Green | Marginal | White | Unknown | - | - | Krul, Nancy & Belle Gardens | --NR-- |
| 'Summertime' | - George Gershwin | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Summertime Blues' | - Eddie Cochran | Small | Blue/Green | | - | Hybrid | Pale-Lavender | August | Dean, Don | .2020 |
| 'Sunny' | - Bobby Hebb | Medium | Yellow | - | - | Unknown | - | - | Soules, Clarence | --NR-- |
| 'Sunrise Serenade' | - Glenn Miller | Giant | Light-Green | - | - | Unknown | - | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Super Star' | - The Carpenters | Large | Blue/Green | Streaked | Yellow | Hybrid | Pale-Lavender | July | Elslager, Ed | .2000 |
| 'Surfer Girl' | - The Beach Boys | Small | Med-Green | - | - | Unknown | Light-Purple | July | Wasitis, Chick | .2000 |
| 'Surf's Up' (Terpening) | - The Beach Boys | Large | Blue/Green | - | - | Unknown | - | - | Terpening, Kent | --NR-- |
| 'Surf's Up' (Zilis) | - The Beach Boys | Medium | Yellow | - | - | TC Sport | Pale-Lavender | July into August | Zilis, Mark | .2009 |
| 'Suzy Q' | - Credence Clearwater Revival | Large | Med-Green | - | - | Hybrid | Light-Purple | August to September | Lohman, Doug & Zilis, Mark | .2009 |
| 'Swan Lake' | - Tchaikovsky | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | August | Sugita, Hajime & Ruh, Peter | .1998 |
| 'Swan Song' | - | Miniature | Dark-Green | Medial | White | Unknown | Med-Lavender | July | Goodwin, Randy | .2019 |
| 'Sweet Chariot' | - Hymn | Giant | Med-Green | Marginal | Yellow | Hybrid | - | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Sweet Dreams' | - The Eurythmics | Small | Med-Green | Medial | White | TC Sport | Med-Lavender | July | Zilis, Mark & Walek, Kevin | .2009 |
| 'Sweet Home Chicago Streaked' | - Blues Brothers | Medium | Dark-Green | Streaked | White | Sport | Med-Lavender | July | Miller, Jeff | --NR-- |
| 'Sweet Nothings' | - Brenda Lee | - | - | - | - | Hybrid | - | - | Livingston, Ron | --NR-- |
| 'Sweet Pea' | - Tommy Roe | Medium | Med-Green | - | - | Hybrid | Med-Lavender | August | Benedict, Dr Ralph (Herb) | --NR-- |
| 'Swiss Lady' | - Pepe Lienhard Band | Small | Blue/Green | Medial | White | Sport | Near-White | July | Hirsbrunner, Liselotte & Dietwyler, Martin | .2005 |
| 'Symphony in Blue' | - | Medium | Blue/Green | | - | Hybrid | Pale-Lavender | September | Stegeman, Bev & Stegeman, Dave | .2019 |
| 'Syncopated Harmony' | - | Medium | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | August | Dean, Don | .2018 |