| No. | Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Abba Rough' | Medium | Blue/Green | | | Hybrid | Near-White | June to July | Aden, Paul | .2010 |
|
2
| 'Bells of Edinborough' | Small | Med-Green | | | Hybrid | Light-Purple | July to August | Savory, Robert | .1993 |
|
3
| 'Mulling Marlborough' | Small | Med-Green | Streaked | White | Unknown | Unknown | Unknown | Moore, Jeff | --NR-- |
|
4
| 'Old Rough House' | Giant | Blue/Green | | | Unknown | Unknown | Unknown | Wade, Van | --NR-- |
|
5
| 'Rough and Ready' | Large | Dark-Green | Streaked | Yellow | Hybrid | Near-White | June to July | Elslager, Ed | .2004 |
|
6
| 'Rough House' | | - | | | Duplicate | - | | Duplicate Name | |
|
7
| 'Rough Knight' | Small | Blue/Green | | | Hybrid | Med-Lavender | August | Beilstein, Doug & Beilstein, Mardy | .2013 |
|
8
| 'Rough Lemon' | Medium | Yellow | | | Hybrid | Light-Purple | July to August | Solberg, Robert | .2022 |
|
9
| 'Rough Rider' | Medium | Blue/Green | | | Unknown | Unknown | Unknown | Beilstein, Doug | --NR-- |
|
10
| 'Rough River' | Large | Med-Green | Streaked | Speckles | Sport | Near-White | July | Hawes, James | --NR-- |
|
11
| 'Rough Waters' | Large | Blue/Green | | | Hybrid | Near-White | June to July | Armstrong, Maxine | .1969 |
|
12
| 'Roughrider' | Medium | Med-Green | Marginal | White | Hybrid | Pure-White | August to September | Graves, Butch | .2008 |
|