| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Galactica' | Small | Blue/Green | | - | Unknown | - | - | Goodwin, Randy | --NR-- |
| 'Gargantua' | Giant | Blue/Green | | - | Unknown | - | - | Wade, Van | --NR-- |
| 'Genesee Genco' | Small | Med-Green | | - | Unknown | Light-Purple | July into August | Brandt-Sorheim, Peter | .2000 |
| 'Giantland Love Under the Stars' | Medium | Blue/Green | | - | Nat-Sport | - | - | Miller, Jeff | --NR-- |
| 'Going My Way' | Medium | Med-Green | Streaked | White | Unknown | - | - | Livingston, Ron | --NR-- |
| 'Gold Fever' | Medium | Yellow | | - | Unknown | - | - | Unknown | --NR-- |
| 'Gold Pressed Latinum' | Small | Yellow | | - | Unknown | Pale-Lavender | - | Dupre, Dirk | --NR-- |
| 'Golden Girl' | Medium | Yellow | | - | Unknown | - | July | Anderson, Kenneth | .1982 |
| 'Goliath' | Giant | Med-Green | | - | Unknown | Pale-Lavender | June into July | Harrison, Dr Jamison & AHS | .1986 |
| 'Good Times' | Medium | Light-Green | Marginal | Yellow | Nat-Sport | Pale-Lavender | July into August | Fransen, Marco & Joyce | --NR-- |
| 'Green Acres' | Giant | Dark-Green | | - | Unknown | Pale-Lavender | July | Geissler, Julia | .1970 |
| 'Green Gables' | Large | Med-Green | | - | Nat-Sport | Pale-Lavender | July into August | Walters Gardens | .1997 |
| 'Green Jeans' | - | - | | - | Hybrid | - | - | Punnett | --NR-- |
| 'Green Jeans' | Medium | Dark-Green | | - | Hybrid | Deep-Purple | July | Avent, Tony | .2005 |
| 'Green Wings' | Large | Light-Green | | - | Unknown | Pale-Lavender | - | Scheer, Alttara | --NR-- |
| 'Greenhead Grey's Anatomy' | Large | Blue/Green | | - | Unknown | Pale-Lavender | July into August | Finke, Chuck | .2009 |
| 'Guiding Light' | Large | Med-Green | Marginal | Yellow | Hybrid | Med-Lavender | July | Elslager, Ed | .2001 |
| 'Gunsmoke' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | June into July | Herold, Roy | .2000 |
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