| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Season | Source | Registered |
|
1
| 'Rain Forest' | Large | Med-Green | | - | Hybrid | August September October | Goodwin, Randy | .1996 |
|
2
| 'Raspberry Sundae' | Small | Dark-Green | Medial | White | Unknown | August September October | Korlipara, Harini & Gossett, Gary & Terra Nova Nurseries | --NR-- |
|
3
| 'Red Cadet' | Medium | Dark-Green | | - | Hybrid | August September October | Van Eechaute, Danny | .2005 |
|
4
| 'Red October' | Medium | Dark-Green | | - | Hybrid | September to October | Herold, Roy & Walek, Kevin & The American Hosta Society | .2009 |
|
5
| 'Red Sox' | Medium | Dark-Green | | - | Hybrid | August September October | Herold, Roy & Walek, Kevin & The American Hosta Society | .2009 |
|
6
| 'Redolent Nosegay' | Large | Dark-Green | Marginal | Yellow | Sport | August September October | Hawes, James | .1999 |
|
7
| 'Restless Sea' | Medium | Med-Green | | - | Hybrid | August September October | Hansen, Hans | .2006 |
|
8
| 'Rhapsody in Blue' | Medium | Blue/Green | | - | Hybrid | August September October | Benedict, Dr Ralph (Herb) | .1995 |
|
9
| 'Ringtail' | Medium | Dark-Green | | - | Hybrid | August September October | Terpening, Kent | .2005 |
|
10
| 'Royal Diadem' | Large | Med-Green | Marginal | White | Sport | August September October | Zumbar, Wm & Zilis, Mark | --NR-- |
|
11
| 'Royal Gold' | Large | Yellow | | - | TC Sport | August September October | Wayside Gardens | --NR-- |
|
12
| 'Royal Rim' | Large | Med-Green | Marginal | White | Sport | August September October | Zumbar, Wm & Zilis, Mark | --NR-- |
|
13
| 'Royal Standard' | Large | Med-Green | | - | Hybrid | August September October | Grullemans, John J. & Wayside Gardens | .1986 |
|
14
| 'Royal Standard' - Mediovariegated | - | Med-Green | Medial | Yellow | TC Sport | August September October | Unknown | --NR-- |
|
15
| 'Royal Standard' - Yellow Form | Large | Yellow | | - | TC Sport | August September October | Unknown | --NR-- |
|
16
| 'Royal Standard Special' | Large | Med-Green | Marginal | Yellow | TC Sport | August September October | Grullemans, John J. & Wayside Gardens | --NR-- |
|