| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Sally Hoffman' | Small | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | June into July | Ward, Dr Dick & Ward, Jane | .2014 |
| 'Sarah Jane' | Large | Med-Green | Marginal | Creamy White | Sport | Pale-Lavender | July into August | Ward, Dr Dick & Ward, Jane | .1997 |
| 'Satin Doll' | Medium | Med-Green | Streaked | White | Hybrid | Pale-Lavender | June | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Saturday Night Fever' | Large | Yellow | - | - | Unknown | - | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Shady Lady' | Medium | Med-Green | Marginal | White | Unknown | - | - | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Shaharazade' | Large | Dark-Green | Marginal | Yellow | Unknown | - | June into July | Ward, Dr Dick & Ward, Jane | .2014 |
| 'Shall We Dance' | Medium | Dark-Green | Streaked | Yellow | Sport | Med-Lavender | July into August | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Shirley Wade' | Medium | Yellow | - | - | Sport | Near-White | June into July | Ward, Dr Dick & Ward, Jane | .2008 |
| 'Smooth Operator' | Giant | Med-Green | - | - | Unknown | Near-White | June into July | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Sneak Preview' | Small | Yellow | - | - | Hybrid | - | June into July | Ward, Dr Dick & Ward, Jane | .2010 |
| 'So Nice' | Medium | Med-Green | Streaked | Yellow | Hybrid | Near-White | July | Ward, Dr Dick & Ward, Jane | .2015 |
| 'Solar Eclipse' (Ward) | Medium | Med-Green | Marginal | White | Hybrid | Pure-White | July | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Sophisticated Lady' | Large | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July | Ward, Dr Dick & Ward, Jane | .2000 |
| 'South Pacific' | Giant | Med-Green | - | - | Unknown | - | - | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Spellbound' | Large | Light-Green | Marginal | White | Hybrid | - | - | Ward, Dr Dick & Ward, Jane | .2005 |
| 'Splendid Sarah' | Medium | Light-Green | Marginal | White | Hybrid | Light-Purple | June | Ward, Dr Dick & Ward, Jane | .2005 |
| 'Sprite' | Medium | Dark-Green | Streaked | Yellow | TC Sport | - | July into August | Ward, Dr Dick & Ward, Jane | .2012 |
| 'Stardust' | Large | Yellow | - | - | Hybrid | Pale-Lavender | July | Ward, Dr Dick & Ward, Jane | .1998 |
| 'Stardust Memories' | Medium | Yellow | - | - | Hybrid | Near-White | June into July | Ward, Dr Dick & Ward, Jane | .2014 |
| 'Starstruck' | Large | Light-Green | Marginal | Dark Green | Unknown | - | - | Ward, Dr Dick & Ward, Jane | --NR-- |
| 'Still Waters' | Medium | Blue/Green | - | - | Hybrid | - | June | Ward, Dr Dick & Ward, Jane | .2010 |
| 'Strike it Rich' | Large | Yellow | - | - | Hybrid | Pale-Lavender | June into July | Ward, Dr Dick & Ward, Jane | .2014 |
| 'Summer Palace' | Large | Light-Green | Marginal | Yellow | Hybrid | - | June into July | Ward, Dr Dick & Ward, Jane | .2010 |
| 'Sunlight and Shadows' | Medium | Med-Green | Streaked | Yellow | Sport | - | July into August | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Sunrise Serenade' | Giant | Light-Green | - | - | Unknown | - | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
| 'Sweet Chariot' | Giant | Med-Green | Marginal | Yellow | Hybrid | - | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
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