| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Rambunctious' | Giant | Blue/Green | - | - | Unknown | Near-White | July | Struhar, Bill | .2018 |
|
2
| 'River City Blues' | Large | Blue/Green | - | - | Unknown | Pale-Lavender | June into July | Zilis, Mark & Ankney, Barry | .2018 |
|
3
| 'Rix Pix' | Miniature | Yellow | - | - | Hybrid | Near-White | June into July | Gilligan, Madelon & Goodenough, Rick | .2015 .2018 |
|
4
| 'Road Rage' | Medium | Med-Green | - | - | Hybrid | Deep-Purple | August | Beilstein, Doug | .2018 |
|
5
| 'Rowan My Boat' | Large | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Beilstein, Doug & Beilstein, Mardy | .2018 |
|
6
| 'Royal Crest' | Large | Med-Green | - | - | Hybrid | Pure-White | August to September | Hansen, Hans & Walters Gardens | .2018 |
|
7
| 'Ruffles n Ridges' | Giant | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Fox, Bob & Fox Hosta Farm | .2018 |
|