| Cultivar Name | Source | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Registered |
| 'James A. Garfield' | Sugita, Hajime & Ruh, Peter | Medium | Dark-Green | - | - | Hybrid | Pale-Lavender | August to October | .2005 |
| 'James Buchanan' | Sugita, Hajime & Ruh, Peter | Small | Light-Green | - | - | Unknown | Pale-Lavender | June into July | .2005 |
| 'James Madison' | Sugita, Hajime & Ruh, Peter | Medium | Med-Green | - | - | Hybrid | Light-Purple | August to October | .2005 |
| 'James Monroe' | Sugita, Hajime & Ruh, Peter | Medium | Yellow | - | - | Unknown | Pale-Lavender | June into July | .2005 |
| 'Japangirl' | Unknown | Miniature | Med-Green | - | - | Hybrid | - | - | --NR-- |
| 'Joshu Iwa' | Sugita, Hajime | Small | Med-Green | - | - | Hybrid | - | - | --NR-- |
| 'Jousaiougon' | Takayanagi, Nagaori | Small | Med-Green | Streaked | Yellow | Unknown | - | - | --NR-- |
| 'Jumonji' | Unknown | Medium | Light-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | August | --NR-- |
| 'Jyunpakuka-akebono' | Unknown | Large | Med-Green | - | | Nat-Sport | Pure-White | July into August | --NR-- |
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