| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Rainbow's End' | Small | Dark-Green | Medial | Yellow | TC Sport | Pale-Lavender | August to September | Hansen, Hans & Shady Oaks Nursery | .2005 |
|
2
| 'Ready' | Large | Dark-Green | - | - | Unknown | Med-Lavender | - | Livingston, Ron | --NR-- |
|
3
| 'Red Baron' | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | - | Cross, Peter | .2001 |
|
4
| 'Red Bull' | Large | Med-Green | - | - | Hybrid | - | July into August | Van Eechaute, Danny | .2010 |
|
5
| 'Red Legs' | Medium | Dark-Green | - | - | Hybrid | - | September | Sugita, Hajime & Ruh, Peter | .1999 |
|
6
| 'Red Sails in the Sunset' | Small | Light-Green | - | - | Hybrid | Light-Purple | August | Van Ostrand, John | .2004 |
|
7
| 'Red Thunder' | Medium | Med-Green | - | - | Hybrid | - | - | Beilstein, Doug & Malloy, Alex | --NR-- |
|
8
| 'Redbud' | Medium | Med-Green | - | - | Hybrid | Med-Lavender | June into July | Hicks, Gerry | .2017 |
|
9
| 'Reddish Dot' | Medium | Med-Green | - | - | Hybrid | Deep-Purple | July into August | Liu, Donghuan | .2016 |
|
10
| 'Redtail' | Medium | Yellow | | | Unknown | Light-Purple | | Carlson, Monty & Carlson, Julie | --NR-- |
|
11
| 'Redwood' | Large | Dark-Green | Streaked | White | Unknown | Light-Purple | | Carlson, Monty & Carlson, Julie | --NR-- |
|
12
| 'Relentless' | Medium | Yellow | | | Hybrid | Pale-Lavender | July | Dean, Don | .2022 |
|
13
| 'Rocket's Red Glare' | Medium | Med-Green | - | - | Hybrid | Pale-Lavender | August to September | Stegeman, Bev & Stegeman, Dave | .2012 |
|
14
| 'Rough Lemon' | Medium | Yellow | | | Hybrid | Light-Purple | July into August | Solberg, Robert | .2022 |
|
15
| 'Royal Persuasion' | Small | Dark-Green | - | - | Unknown | - | - | King, Jim | --NR-- |
|
16
| 'Rufus Rider' | Medium | Dark-Green | Marginal | White | Hybrid | Pale-Lavender | July into August | Livingston, Ron & The American Hosta Society | .2020 |
|
17
| 'Rust Bucket' | Medium | Yellow | - | - | Unknown | - | - | Goodenough, Rick | --NR-- |
|