| Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Dana Nicolette' | Medium | Blue/Green | - | - | Hybrid | Light-Purple | July | Weissenberger, Henry & Walek, Kevin | .2009 |
| 'Dani Adams' | Large | Med-Green | Streaked | Yellow | Unknown | Pale-Lavender | - | Hackbarth, Robert | .2015 |
| 'Danica Poul' | Medium | Light-Green | Streaked | Speckles | Unknown | - | - | Hansen, Hans Ejler | --NR-- |
| 'Daughter of Ledi Lantis' | Medium | Blue/Green | - | - | Hybrid | Near-White | June | Seaver, Mildred | --NR-- |
| 'David A. Haskell' | Large | Light-Green | - | - | Sport | Pale-Lavender | July into August | Haskell, Allen & Malloy, Alex | .1999 |
| 'David F. Mahoney' | Giant | Blue/Green | - | - | Hybrid | Near-White | June into July | Chamberlain, Steve | .2001 |
| 'David Reath' | Large | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | July | Reath, David | .1998 |
| 'David Stone' | Medium | Light-Green | - | - | Sport | Near-White | June into July | Summers, Alex | --NR-- |
| 'Diana Grenfell' | - | Med-Green | Marginal | White | Unknown | - | - | Unknown | --NR-- |
| 'Diana Reeck' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Diane Gray Dalton' | Medium | Dark-Green | Streaked | White | Unknown | Med-Lavender | July | Seaver, Mildred & Walek, Kevin | .2009 |
| 'Dick Strub' | Large | Blue/Green | - | - | Hybrid | - | - | Zilis, Mark | --NR-- |
| 'Dick Ward' | Large | Yellow | Marginal | Blue-Green | Sport | Pale-Lavender | June into July | Hatfield, Handy | .1991 |
| 'Doctor Fu Manchu' | Medium | Dark-Green | - | - | Hybrid | Light-Purple | September | Sugita, Hajime & Ruh, Peter | .1998 |
| 'Don Juan' | Medium | Med-Green | - | - | Sport | Light-Purple | August | Seaver, Mildred | .2009 |
| 'Don Quixote' | Medium | Med-Green | Streaked | White | Sport | Light-Purple | August | Seaver, Mildred | .2004 |
| 'Don Stevens' | Medium | Med-Green | Marginal | White | Unknown | Light-Purple | August | Seaver, Mildred | .2005 |
| 'Don Stevens Green' | Medium | Dark-Green | - | - | Sport | Light-Purple | August | Wade, Van | --NR-- |
| 'Don Stevens Splashed' | Medium | Med-Green | Streaked | White | Sport | Light-Purple | August | Unknown | --NR-- |
| 'Don Stevens Variegated' | Medium | Med-Green | Streaked | Speckles | Sport | Light-Purple | August | Unknown | --NR-- |
| 'Don Viejo' | Medium | Med-Green | - | - | Sport | Light-Purple | August | Crockett, Clyde | --NR-- |
| 'Donald Samuel' | Large | Med-Green | Marginal | Yellow | Unknown | - | - | Wafler, Steve & Wafler, Anna | --NR-- |
| 'Doris Page' | - | - | Streaked | - | Unknown | - | - | Unknown | --NR-- |
| 'Dorothy Benedict' | Medium | Med-Green | Streaked | Yellow | Hybrid | Near-White | June into July | Benedict, Dr Ralph (Herb) | .1983 |
| 'Dorothy Benedict Blue' | - | - | - | - | Sport | - | - | Unknown | --NR-- |
| 'Dorothy Willson' | Small | Med-Green | Marginal | White | Unknown | - | - | Unknown | --NR-- |
| 'Dorothy Wilson' | Small | Med-Green | Marginal | White | Unknown | - | - | Unknown | --NR-- |
| 'Dr Jamison Harrison' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Dr Topper Hagerman' | Large | Blue/Green | - | - | Hybrid | - | June into July | Kwick, Charles | .2016 |
| 'Dr. Shuichi Hirao' | - | - | - | - | Duplicate | - | - | Duplicate Name | --NR-- |
| 'Dustin More' | Small | Dark-Green | Streaked | White | Sport | Pale-Lavender | August to October | Snyder, Ron | .2003 |
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