| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Ghee Syche' | Large | Med-Green | Marginal | Yellow | Unknown | - | - | Livingston, Ron | --NR-- |
| 'Gigantosaurus' | Giant | Blue/Green | Marginal | Yellow | Unknown | Pale-Lavender | June into July | Hansen, Hans | .2021 |
| 'Glass Hearts' | Medium | Yellow | - | - | Unknown | Light-Purple | July | Smith, Fred | --NR-- |
| 'Golden Simplicity' | Large | Yellow | - | - | Unknown | Light-Purple | July | Rogers, Floyd | .2005 |
| 'Gone with the Wind' | Large | Dark-Green | Marginal | White | Hybrid | - | - | Petryszyn, Olga | .2009 |
| 'Grand Boys' | Large | Med-Green | Marginal | White | Sport | Pale-Lavender | July | Kuenster, Rod & Freeman, Franc & Freeman, Sally | .2006 |
| 'Green Power' (Snyder) | Medium | Dark-Green | - | - | Sport | Pale-Lavender | July into August | Snyder, Ron | .2003 |
| 'Gulf Hagas' | Large | Light-Green | - | - | Unknown | - | - | Sawyer, Rick & Fernwood Nursery and Gardens | --NR-- |
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