| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Rain Forest Shooting Stars' | Medium | Dark-Green | Medial | Yellow | Sport | Med-Lavender | July into August | Owens, William & Owens, Jean | .2008 |
|
2
| 'Rambunctious' | Giant | Blue/Green | | - | Unknown | Near-White | July | Struhar, Bill | .2018 |
|
3
| 'Ratty' | Medium | Med-Green | | - | Unknown | Unknown | June into July | Gilligan, Madelon | .2013 |
|
4
| 'Reflections' | Medium | Dark-Green | Marginal | White | Unknown | Unknown | June into July | Goodwin, Randy | .2005 |
|
5
| 'Remembrance' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Unknown | June into July | Skaggs, Virginia & Skaggs, Brian & Gilligan, Madelon | .2015 |
|
6
| 'Rhino Blue' | Large | Blue/Green | | - | Sport | Near-White | June into July | Rawson, Don | .2010 |
|
7
| 'Rimmed Cauldron' | Medium | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | June into July | Dye, Kay | .2020 |
|
8
| 'Rip Van Wrinkle' | Large | Blue/Green | | | Unknown | Unknown | - | Smith, Scott | --NR-- |
|
9
| 'Rix Pix' | Miniature | Yellow | | - | Hybrid | Near-White | June into July | Gilligan, Madelon & Goodenough, Rick | .2015 .2018 |
|
10
| 'Robb's Rag' | Giant | Blue/Green | Streaked | White | Unknown | Unknown | - | McWilliams, Robb | --NR-- |
|
11
| 'Rock of Ages' | Giant | Blue/Green | | - | Sport | Pure-White | June into July | Ward, Dr Dick & Ward, Jane | .2009 |
|
12
| 'Rookie Mouse' | Miniature | Med-Green | | - | Sport | Light-Purple | June into July | Szustakiewicz, Peter | --NR-- |
|
13
| 'Rosedale Golden Lining' | Medium | Yellow | | - | Hybrid | Unknown | - | Hadrava, Jerry | .1999 |
|
14
| 'Rosedale Golden Unicorn' | Large | Yellow | | - | Hybrid | Near-White | July | Hadrava, Jerry | .1999 |
|
15
| 'Rosedale Mr. Green Jeans' | Large | Med-Green | | - | Unknown | Unknown | - | Hadrava, Jerry | --NR-- |
|
16
| 'Rough and Ready' | Large | Dark-Green | Streaked | Yellow | Hybrid | Near-White | June into July | Elslager, Ed | .2004 |
|
17
| 'Rough Knight' | Small | Blue/Green | | - | Hybrid | Med-Lavender | August | Beilstein, Doug & Beilstein, Mardy | .2013 |
|
18
| 'Round the Glen' | Large | Blue/Green | Streaked | White | Hybrid | Unknown | - | Serafin, Viktoria | --NR-- |
|
19
| 'RSVP' | Small | Dark-Green | Marginal | White | Unknown | Light-Purple | August | Lysne, Rod | .2022 |
|
20
| 'Ruffled Mouse Ears' | Miniature | Blue/Green | | - | Sport | Med-Lavender | July | Zilis, Mark | .2011 |
|
21
| 'Ruffles n Ridges' | Giant | Blue/Green | | - | Hybrid | Med-Lavender | June into July | Fox, Bob & Fox Hosta Farm | .2018 |
|
22
| 'Rust Bucket' | Medium | Yellow | | - | Unknown | Unknown | - | Goodenough, Rick | --NR-- |
|
23
| 'You're So Vein' | Small | Dark-Green | | - | Unknown | Med-Lavender | July into August | Avent, Tony | .2012 |
|