| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Fashion Statement' | Large | Light-Green | - | - | Nat-Sport | Pale-Lavender | July into August | Stadden, Josh | --NR-- |
| 'Fleeta's Blue' | Medium | Blue/Green | - | - | Unknown | Near-White | June into July | Woodroffe, Fleeta Brownell & Ruh, Peter | .1999 |
| 'Fleeta's Fantasy' | Medium | Blue/Green | Medial | Green | Unknown | Near-White | June into July | Woodroffe, Fleeta Brownell & Ruh, Peter | .1999 |
| 'Floating on Air' | Medium | Blue/Green | | | Unknown | Near-White | July into August | Vertz, Mary | .2020 |
| 'Fond Farewell' | Large | Blue/Green | - | - | Hybrid | Pure-White | June into July | Schulz, Ed | .2002 .2018 |
| 'Forest Canopy' | Large | Blue/Green | - | - | Unknown | Near-White | July | Goodwin, Randy | .2009 |
| 'Foundry Gold' | Large | Yellow | - | - | Unknown | - | - | Hackbarth, Robert | .2015 |
| 'Foxfire Green Lantern' | Medium | Light-Green | - | - | Hybrid | Med-Lavender | July | Schulte, Steve & Silvers, Bill | .2009 |
| 'Foxfire X-Philes' | Medium | Blue/Green | Medial | Yellow | Nat-Sport | Near-White | June into July | Schulte, Steve & Silvers, Bill | .2009 |
| 'Franc's Green Bomber' | Giant | Dark-Green | - | - | Unknown | - | June into July | Freeman, Franc | .2010 |
| 'Frensham Basking Viper' | Medium | Blue/Green | | | Hybrid | Pale-Lavender | June into July | Colley, June & Baker, John | .2020 |
| 'Frensham Peanut Brittle' | Medium | Blue/Green | | | Unknown | Near-White | June into July | Colley, June & Baker, John | .2020 |
| 'Friday Morning Coffee' | Large | Blue/Green | Marginal | Green | Unknown | - | June into July | Freeman, Franc | .2010 |
| 'Friends Forever' | Large | Blue/Green | - | - | Unknown | Pure-White | July into August | King, Herb & Gladys | .2018 |
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