| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Season | Source | Registered |
|
1
| 'Rasha Maru' | Miniature | Dark-Green | | | Nat-Sport | August to September | Solberg, Robert | --NR-- |
|
2
| 'Raspberry Beauty' | Medium | Light-Green | - | - | Hybrid | August to September | Dishon, Jim | .1999 |
|
3
| 'Raspberry Parfait' | Large | Med-Green | - | - | Hybrid | September | Ruh, Peter | .1998 |
|
4
| 'Razz'n Rick' | Large | Med-Green | Streaked | Yellow | Unknown | August to September | Schmidt, Bevie | .2009 |
|
5
| 'Red Corvette' | Medium | Med-Green | - | - | Hybrid | August to September | Moore, Jeff & Schwarz, Jim | .2015 |
|
6
| 'Red October' | Medium | Dark-Green | - | - | Hybrid | September to October | Herold, Roy & Walek, Kevin | .2009 |
|
7
| 'Red Raven' | Small | Med-Green | - | - | Hybrid | August to September | Malloy, Alex | --NR-- |
|
8
| 'Red Rover' | Medium | Med-Green | - | - | Hybrid | August to September | Moore, Jeff & Schwarz, Jim | .2015 |
|
9
| 'Reddy Eddy' | Large | Dark-Green | - | - | Unknown | August to September | Benedict, Dr Ralph (Herb) & Kuenster, Rod | .2010 |
|
10
| 'Redneck Mardi Gras' | Small | Yellow | - | - | Unknown | August to September | Duncan, Mary Jo | .2016 |
|
11
| 'Rhino' | Medium | Med-Green | Marginal | White | Sport | August to September | Goodwin, Randy | .2000 |
|
12
| 'Ritz Glitz' | Small | Med-Green | Marginal | White | Unknown | August to September | Goodwin, Randy | .2020 |
|
13
| 'Robyn Duback' | Medium | Med-Green | Marginal | Yellow | Unknown | August to September | Benedict, Dr Ralph (Herb) & Kuenster, Rod | .2010 |
|
14
| 'Ros Hogh' | Medium | Med-Green | - | - | Unknown | August to September | Krossa, Gus & Mr Curtis | --NR-- |
|
15
| 'Rosie Posie' | Large | Dark-Green | Marginal | White | Hybrid | August to September | Krul, Nancy & Belle Gardens | .1994 |
|
16
| 'Roughrider' | Medium | Med-Green | Marginal | White | Hybrid | August to September | Graves, Butch | .2008 |
|
17
| 'Roulette Russe' | Medium | Med-Green | - | - | Unknown | September | Bastille, Jocelyne | --NR-- |
|
18
| 'Royal Crest' | Large | Med-Green | - | - | Hybrid | August to September | Hansen, Hans & Walters Gardens | .2018 |
|
19
| 'Royal Lady' | Large | Dark-Green | - | - | Unknown | August to September | Holly, Gladys & The American Hosta Society | .1986 |
|
20
| 'Royal Standard Double' | Large | Med-Green | - | - | Sport | August to September | Reinermann, Werner | --NR-- |
|
21
| 'Royal Wedding' | Medium | Med-Green | Marginal | White | TC Sport | August to September | Bergeron, Amy & Walters Gardens | --NR-- |
|
22
| 'Rubies and Ruffles' | Medium | Dark-Green | Marginal | White | Unknown | August to September | Goodwin, Randy | .2009 |
|
23
| 'Ruby' | Small | Med-Green | - | - | Hybrid | August to September | Savory, Dennis | .2013 |
|
24
| 'Ruby Slippers' | Medium | Med-Green | - | - | Hybrid | September | Ward, Dr Dick & Ward, Jane | .1999 |
|
25
| 'Ruffed Up' | Large | Yellow | - | - | Hybrid | August to September | Carlson, Monty & Carlson, Julie | .2009 |
|