| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Radiant Light' | Medium | Light-Green | | | Unknown | Unknown | Unknown | Livingston, Ron | --NR-- |
|
2
| 'Rambunctious' | Giant | Blue/Green | | | Unknown | Near-White | July | Struhar, Bill | .2018 |
|
3
| 'Raspatini' | Miniature | Med-Green | | | Hybrid | Light-Purple | August | Zilis, Mark | .2009 |
|
4
| 'Raspberry Ice Cream' | Giant | Yellow | Streaked | Speckles | Sport | Med-Lavender | July | Unknown | --NR-- |
|
5
| 'Razzmatazz' | Medium | Med-Green | Marginal | White | Hybrid | Pale-Lavender | July to August | Beilstein, Doug & Beilstein, Mardy | .2013 |
|
6
| 'Red Stilts' | Large | Med-Green | | | Hybrid | Pale-Lavender | June to July | Van Eechaute, Danny | .2011 |
|
7
| 'Regal Tot' | Small | Light-Green | | | Hybrid | Light-Purple | July to August | Zilis, Mark | .2010 |
|
8
| 'Remembrance' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Unknown | June to July | Skaggs, Virginia & Skaggs, Brian & Gilligan, Madelon | .2015 |
|
9
| 'Reverend Mac' | Medium | Blue/Green | | | Sport | Pale-Lavender | July to August | Van Eechaute, Danny | .2011 |
|
10
| 'Rhino Blue' | Large | Blue/Green | | | Sport | Near-White | June to July | Rawson, Don | .2010 |
|
11
| 'Rhino Tuff' | Medium | Blue/Green | | | Sport | Near-White | June to July | Rawson, Don | --NR-- |
|
12
| 'Richland Blue' | Large | Blue/Green | | | Unknown | Near-White | June to July | Wade, Van | .2007 |
|
13
| 'Richmond Blue' | Large | Blue/Green | | | TC Sport | Near-White | June to July | Zumbar, Wm & Walek, Kevin & The American Hosta Society | .2009 |
|
14
| 'Ringmaster' | Small | Blue/Green | Marginal | White | Sport | Pale-Lavender | July | Zilis, Mark | .2011 |
|
15
| 'River's Edge' | Large | Blue/Green | Marginal | White | Sport | Pale-Lavender | July | Walek, Kevin | --NR-- |
|
16
| 'Road Rage' | Medium | Med-Green | | | Hybrid | Deep-Purple | August | Beilstein, Doug | .2018 |
|
17
| 'Rock-N-Chick' | Unknown | Blue/Green | Streaked | White | Unknown | Unknown | Unknown | Ziarek, Ken | --NR-- |
|
18
| 'Rocky Mountain High' | Large | Med-Green | Marginal | Yellow | Hybrid | Pale-Lavender | June to July | Kuk, Bob | .1991 |
|
19
| 'Rosaleen' | Small | Dark-Green | Marginal | White | Hybrid | Light-Purple | June to July | Gilligan, Madelon | .2017 |
|
20
| 'Rosie Posie' | Large | Dark-Green | Marginal | White | Hybrid | Med-Lavender | August to September | Krul, Nancy & Belle Gardens | .1994 |
|
21
| 'Rostraver Heritage' | Large | Med-Green | | | Unknown | Near-White | July to August | Zolock, Steve & Zolock, Sarah | .2009 |
|
22
| 'Rough Knight' | Small | Blue/Green | | | Hybrid | Med-Lavender | August | Beilstein, Doug & Beilstein, Mardy | .2013 |
|
23
| 'Rough Lemon' | Medium | Yellow | | | Hybrid | Light-Purple | July to August | Solberg, Robert | .2022 |
|
24
| 'Roundhouse Blues' | Large | Blue/Green | | | Unknown | Near-White | June to July | Micheletti, Tom | .1998 |
|
25
| 'Rowan My Boat' | Large | Blue/Green | | | Hybrid | Med-Lavender | June to July | Beilstein, Doug & Beilstein, Mardy | .2018 |
|
26
| 'Royal Crest' | Large | Med-Green | | | Hybrid | Pure-White | August to September | Hansen, Hans & Walters Gardens | .2018 |
|
27
| 'Royal Empress' | Giant | Med-Green | Marginal | Chartreuse | Sport | Pale-Lavender | June to July | Rawson, Don | .2016 |
|
28
| 'Royal Wedding' | Medium | Med-Green | Marginal | White | TC Sport | Pure-White | August to September | Bergeron, Amy & Walters Gardens | .2014 |
|
29
| 'Ruffed Up' | Large | Yellow | | | Hybrid | Pale-Lavender | August to September | Carlson, Monty & Carlson, Julie | .2009 |
|
30
| 'Ruffles n Ridges' | Giant | Blue/Green | | | Hybrid | Med-Lavender | June to July | Fox, Bob & Fox Hosta Farm | .2018 |
|
31
| 'Rumpelstiltskin' | Medium | Dark-Green | Marginal | Light Green | Hybrid | Light-Purple | July | Savory, Robert & Savory, Dennis | .1997 |
|
32
| 'Rusty's Fine Line' | Large | Dark-Green | Medial | White | Sport | Pale-Lavender | July to August | Rouillier, Denis | --NR-- |
|