| Cultivar Name | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Aachen' | Blue/Green | - | - | Hybrid | - | June into July | Malloy, Alex | .2005 |
| 'Abiqua Drinking Gourd' | Blue/Green | - | - | Hybrid | Near-White | June into July | Purtymun, Charles | .1989 |
| 'Academy Golden Papoose' | Light-Green | - | - | Unknown | - | June into July | Chamberlain, Steve | .2004 |
| 'Ain't Misbehavin' | Med-Green | - | - | Hybrid | Med-Lavender | August to October | Dalton, Jim & Meg | .2012 |
| 'Allo, Allo, Allo' | Med-Green | - | - | Hybrid | Med-Lavender | July into August | Scheer, Alttara & Gilligan, Madelon | .2017 |
| 'American Super Mouse' | Blue/Green | - | - | Nat-Sport | Light-Purple | July | Wade, Van | --NR-- |
| 'Amethyst Blue' | Blue/Green | - | - | Hybrid | Deep-Purple | June into July | Seaver, Charles | .1996 |
| 'Amigo' | Blue/Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | Schwarz, Karen & Zilis, Mark | .2014 |
| 'Anna the Stripper' | Yellow | Streaked | Green | Unknown | - | July into August | Barger, Bill & Anna | .2016 |
| 'Aristocrat' | Blue/Green | Marginal | Creamy White | Nat-Sport | Pale-Lavender | July into August | Falstad, C.H & Walters Gardens | .1997 |
| 'Aspen Gold' | Yellow | - | - | Hybrid | Near-White | June into July | Grapes, Vivian | .1986 |
| 'Aureomaculata', H ventricosa | Yellow | Marginal | Dark Green | Nat-Sport | Light-Purple | July | AHS | .1987 |
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