| Paul Aden Hostas | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Sassy' | Miniature | Med-Green | Marginal | White | Hybrid | Light-Purple | July into August | Aden, Paul | .1987 |
| 'Seer Master' | Medium | Dark-Green | - | - | Unknown | - | June into July | Aden, Paul | --NR-- |
| 'Serendipity' | Medium | Blue/Green | - | - | Hybrid | Pale-Lavender | July | Aden, Paul | .1978 |
| 'Shade Beauty' | Large | Light-Green | Marginal | White | Unknown | Light-Purple | July into August | Aden, Paul | .1982 |
| 'Shade Fanfare' | Medium | Med-Green | Marginal | Creamy White | Nat-Sport | Pale-Lavender | July | Aden, Paul | .1986 |
| 'Shade Master' | Medium | Yellow | - | - | Hybrid | Pale-Lavender | July | Aden, Paul | .1982 |
| 'Shadow and Substance' | Large | Med-Green | Medial | Yellow | Unknown | - | - | Aden, Paul | --NR-- |
| SHADOWLAND | - | - | - | - | TRADEMARK | - | - | TRADENAME | --NR-- |
| 'Shalimar' | Medium | Med-Green | Marginal | White | Hybrid | - | July into August | Aden, Paul | .1983 |
| 'Shenanigans' | Medium | Dark-Green | Marginal | White | Unknown | Med-Lavender | July | Aden, Paul | --NR-- |
| 'Shining Tot' | Miniature | Med-Green | - | - | Hybrid | Light-Purple | August | Aden, Paul | .1982 |
| 'Shogun' | Large | Light-Green | Marginal | White | Unknown | Pale-Lavender | July | Aden, Paul | .1983 |
| 'Showtime' | Large | Med-Green | Marginal | White | Hybrid | Near-White | July | Aden, Paul | .1987 |
| SILVER CROWN | - | - | - | - | TRADEMARK | - | - | TRADENAME | --NR-- |
| SILVER VARIEGATED | - | - | - | - | TRADEMARK | - | - | TRADENAME | --NR-- |
| 'Sitting Pretty' | Small | Dark-Green | Medial | Yellow | Hybrid | Light-Purple | July | Aden, Paul | .1987 |
| 'Snap Crackle Pop' | Small | Blue/Green | - | - | Unknown | - | - | Aden, Paul | --NR-- |
| 'Snow Cap' | Medium | Blue/Green | Marginal | Creamy White | Hybrid | Near-White | June into July | Aden, Paul | .1980 |
| 'So Sweet' | Large | Med-Green | Marginal | Creamy White | Hybrid | Pale-Lavender | August | Vaughn, Kevin & Aden, Paul | .1986 |
| 'Sophistication' | Large | Light-Green | Medial | White | Unknown | - | - | Aden, Paul | --NR-- |
| 'Sparky' | Small | Dark-Green | Marginal | Yellow | Hybrid | Light-Purple | August | Aden, Paul | .1987 |
| 'Splish Splash' | Medium | Med-Green | Marginal | Yellow | Hybrid | Light-Purple | July | Aden, Paul | .1980 |
| 'Spritzer' | Medium | Yellow | Marginal | Greenish White | Hybrid | Pale-Lavender | August to October | Aden, Paul | .1986 |
| 'Squiggles' | Small | Med-Green | Medial | White | Hybrid | Pale-Lavender | July into August | Aden, Paul | .1978 |
| 'Stiletto' | Medium | Med-Green | Marginal | White | Hybrid | Light-Purple | August | Aden, Paul | .1987 |
| 'Sum and Substance' | Giant | Light-Green | - | - | Unknown | Pale-Lavender | July into August | Shaw, Florence & Aden, Paul | .1980 |
| 'Sun Glow' | Large | Yellow | - | - | Hybrid | Pale-Lavender | June | Aden, Paul | .1974 |
| 'Sun Power' | Large | Yellow | - | - | Hybrid | Pale-Lavender | July | Aden, Paul | .1986 |
| 'Sunshine Kid' | Small | Dark-Green | Marginal | Yellow | Hybrid | Light-Purple | July | Aden, Paul | .1980 |
| 'Sweetie' | Medium | Med-Green | Marginal | Creamy White | Hybrid | Pale-Lavender | August | Aden, Paul | .1988 |
| 'Swoosh' | Medium | Med-Green | Streaked | Speckles | Hybrid | Deep-Purple | July into August | Aden, Paul | .1978 |
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