| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Sum Blue' | Small | Blue/Green | | - | Hybrid | Near-White | June into July | Kwick, Charles | .2019 |
| 'Sum Cup' | Large | Light-Green | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Sum Cup-o-Joe' | Large | Med-Green | Marginal | White | Sport | Pale-Lavender | June into July | Elslager, Ed | .2000 |
| 'Sum Enchanted' | Large | Med-Green | - | - | Hybrid | - | - | Goodwin, Randy | --NR-- |
| 'Sum Like It Hot' | Large | Light-Green | Streaked | Yellow | Sport | Pale-Lavender | July into August | Elslager, Ed | .2003 |
| 'Sum Piecrust' | Giant | Light-Green | - | - | Sport | Pale-Lavender | July into August | Elslager, Ed | .1999 |
| 'Sum Ringer' | Giant | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | July | Green Mountain Hosta | --NR-- |
| 'Sum Streaker' | Giant | Yellow | Streaked | White | Sport | Pale-Lavender | August | Elslager, Ed | .2005 |
| 'Sum Thing Else' | Large | Dark-Green | - | - | Sport | Pale-Lavender | July into August | Unknown | --NR-- |
| 'Sum Upper Crust' | Giant | Light-Green | Streaked | White | Sport | Pale-Lavender | July into August | Elslager, Ed | .2004 |
| 'Sum Zero' | Large | Dark-Green | - | - | Sport | Pale-Lavender | July into August | Solberg, Robert | .2011 |
| 'Summer in Georgia' | Large | Blue/Green | Marginal | Yellow | Unknown | Med-Lavender | August | Anderson, Jim | --NR-- |
| 'Summer Sunrise' | - | Light-Green | Marginal | White | Unknown | - | - | Van den Top, Jan | --NR-- |
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