| Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
| 'Rainforest Sunrise' | Medium | Yellow | Marginal | Green | TC Sport | Near-White | July | Anderson, Jim | .2003 |
| 'Raleigh Remembrance' | Medium | Med-Green | - | - | Hybrid | Med-Lavender | July | Zilis, Mark | .2003 |
| 'Raspberry Meringue' | Small | Dark-Green | Medial | Chartreuse | TC Sport | Deep-Purple | August | Zilis, Mark | .2003 |
| 'Raving Beauty' | Large | Yellow | - | - | Unknown | - | - | Goodwin, Randy | .2003 |
| 'Regal Heir' | Large | Dark-Green | Streaked | White | Nat-Sport | Pale-Lavender | July | Tylinski, Stan | .2003 |
| 'Regal Rumor' | Large | Med-Green | Streaked | White | Unknown | Pale-Lavender | July into August | Laico, Michael | .2003 |
| 'Reginald Kaye' | Medium | Blue/Green | - | - | Unknown | Near-White | August | Ruh, Peter & Jean | .2003 |
| 'Reverie' | Medium | Med-Green | Medial | Creamy White | Hybrid | Pure-White | August | Wilkins, Dr Jim & Sandy | .2003 |
| 'Rhein' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | August | Klose, Heinz & Ruh, Peter & Jean | .2003 |
| 'Righteous Rays' | Medium | Yellow | - | - | Hybrid | Med-Lavender | August | Snyder, Ron | .2003 |
| 'Rocky Fork' | Medium | Blue/Green | - | - | Unknown | Pale-Lavender | June into July | Ward, Dr Dick & Jane | .2003 |
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