| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
| 'Dark Secret' | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | .2009 |
| 'Dark Tower' | Giant | Med-Green | - | - | Hybrid | Pure-White | - | .1996 |
| 'Darkside' (Ward) | Large | Blue/Green | - | - | Unknown | Near-White | June into July | --NR-- |
| 'Dawes' | Medium | Dark-Green | Medial | Yellow | Hybrid | Pale-Lavender | July | .2005 |
| 'Delta Blues' | Large | Blue/Green | - | - | Hybrid | Pale-Lavender | June into July | .2012 |
| 'Don't Look Back' | Small | Med-Green | Streaked | Yellow | Hybrid | Near-White | June into July | .2015 |
| 'Dragonfly' | Miniature | Light-Green | Marginal | White | Hybrid | - | - | .2012 |
| 'Dream On' | Medium | Dark-Green | Medial | White | Sport | Pale-Lavender | June | .2013 |
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