| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Raucous Ruffles' | Medium | Blue/Green | - | - | Hybrid | - | - | Dean, Don | .2008 |
| 'Raving Beauty' | Large | Yellow | - | - | Unknown | - | - | Goodwin, Randy | .2003 |
| 'Regal Supreme' | Giant | Blue/Green | Marginal | White | Nat-Sport | Pale-Lavender | June into July | van den Top, Jan & Van Eechaute, Danny | .2008 |
| 'Rip Curl' | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | June | Lynch, P. | .2005 |
| 'Risa' | Small | Med-Green | - | - | Unknown | Med-Lavender | July into August | Dupre, Dirk | .2006 |
| 'Robust Giant' | Large | Light-Green | - | - | Unknown | - | June into July | Ruh, Peter & Jean | .2005 |
| 'Rocket City' | Small | Yellow | - | - | Unknown | - | - | Goodwin, Randy | .2014 |
| 'Rostraver Heritage' | Large | Med-Green | - | - | Unknown | Near-White | July into August | Zolock, Steve & Sarah | .2009 |
| 'Roughrider' | Medium | Med-Green | Marginal | White | Hybrid | Pure-White | August to September | Graves, Butch | .2008 |
| 'Rubies and Ruffles' | Medium | Dark-Green | Marginal | White | Unknown | Med-Lavender | August to September | Goodwin, Randy | .2009 |
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