| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Raspatini' | Miniature | Med-Green | - | - | Hybrid | Light-Purple | August | Zilis, Mark | .2009 |
|
2
| 'Refiners Fire' | Large | Med-Green | Medial | Yellow | Hybrid | Pale-Lavender | July | Lysne, Rod | .2019 |
|
3
| 'Regal Tot' | Small | Light-Green | - | - | Hybrid | Light-Purple | July into August | Zilis, Mark | .2010 |
|
4
| 'Reid All About It' | Large | Dark-Green | Marginal | White | Hybrid | Pale-Lavender | July | Beilstein, Doug & Beilstein, Mardy | .2020 |
|
5
| 'Reptilian' | Large | Dark-Green | - | - | Unknown | Near-White | June into July | Sawyer, Rick & The American Hosta Society | .2019 |
|
6
| 'Rhino Blue' | Large | Blue/Green | - | - | Sport | Near-White | June into July | Rawson, Don | .2010 |
|
7
| 'Richmond Blue' | Large | Blue/Green | - | - | TC Sport | Near-White | June into July | Zumbar, Wm & Walek, Kevin | .2009 |
|
8
| 'Rimmed Cauldron' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | June into July | Dye, Kay | .2020 |
|
9
| 'Ritz Glitz' | Small | Med-Green | Marginal | White | Unknown | Pale-Lavender | August to September | Goodwin, Randy | .2020 |
|
10
| 'River Dance' | Medium | Blue/Green | | - | Hybrid | Pale-Lavender | July | Dean, Don | .2020 |
|
11
| 'Road Rage' | Medium | Med-Green | - | - | Hybrid | Deep-Purple | August | Beilstein, Doug | .2018 |
|
12
| 'Rosie Posie' | Large | Dark-Green | Marginal | White | Hybrid | Med-Lavender | August to September | Krul, Nancy & Belle Gardens | .1994 |
|
13
| 'Rostraver Heritage' | Large | Med-Green | - | - | Unknown | Near-White | July into August | Zolock, Steve & Zolock, Sarah | .2009 |
|
14
| 'Round About Midnight' | Medium | Blue/Green | | - | Hybrid | Pale-Lavender | July into August | Dean, Don | .2019 |
|
15
| 'Rowan My Boat' | Large | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Beilstein, Doug & Beilstein, Mardy | .2018 |
|
16
| 'Royal Crest' | Large | Med-Green | - | - | Hybrid | Pure-White | August to September | Hansen, Hans & Walters Gardens | .2018 |
|
17
| 'Ruffles and Flourishes' | Small | Light-Green | Marginal | White | Unknown | Near-White | July | Goodwin, Randy | .2019 |
|
18
| 'Ruffles n Ridges' | Giant | Blue/Green | - | - | Hybrid | Med-Lavender | June into July | Fox, Bob & Fox Hosta Farm | .2018 |
|
19
| 'Rumpelstiltskin' | Medium | Dark-Green | Marginal | Light Green | Hybrid | Light-Purple | July | Savory, Robert & Savory, Dennis | .1997 |
|
20
| 'Rusty's Fine Line' | Large | Dark-Green | Medial | White | Sport | Pale-Lavender | July into August | Rouillier, Denis | --NR-- |
|