| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Abigail Adams' | - | - | - | - | Unknown | - | - | Unknown | --NR-- |
| 'Abraham Lincoln' | Medium | Blue/Green | - | - | Hybrid | Light-Purple | June into July | Beilstein, Doug & Zilis, Mark | .2009 |
| 'Admiral Halsey' | Large | Dark-Green | Marginal | White | Sport | Med-Lavender | June into July | Wasitis, Chick & Walek, Kevin | .2009 |
| 'Aesop' | Miniature | Med-Green | Marginal | White | Hybrid | Light-Purple | July | Beilstein, Doug & Malloy, Alex | .2005 |
| 'American Gladiator' | Large | Blue/Green | Marginal | Yellow | Hybrid | Near-White | June into July | Hansen, Hans | .2007 |
| 'Andrew Jackson' | Giant | Blue/Green | - | - | Unknown | Near-White | June into July | Sugita, Hajime & Ruh, Peter & Ruh, Jean | .2001 |
| 'Anglo Saxon' | Medium | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July | Malloy, Alex | .2001 |
| 'Antoinette' | Medium | Med-Green | Marginal | Yellow | Sport | Pale-Lavender | July | Kuk, Bob | .2000 |
| 'Arc de Triomphe' | Large | Blue/Green | Marginal | Creamy White | Hybrid | Pale-Lavender | July into August | Elslager, Ed | .2000 |
| 'Atlantis' | Large | Blue/Green | Marginal | Yellow | Sport | Pale-Lavender | June into July | Hansen, Hans & Avent, Tony | .2004 |
| 'Augustus' | Medium | Green | Marginal | White | Hybrid | Pale-Lavender | July into August | Tylinski, Stan & Malloy, Alex | .2003 |
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