| No. | Hosta Cultivar | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Camelot' | Medium | Blue/Green | | - | Unknown | Pale-Lavender | July | Smith, Eric & British Hosta and Hemerocallis Society | .1988 |
|
2
| 'Canadian Blue' | Large | Blue/Green | | - | Unknown | Pale-Lavender | July into August | Van Vliet, Arie & Walek, Kevin & The American Hosta Society | .2009 |
|
3
| 'Carolina Blue' | Medium | Blue/Green | | - | Hybrid | Light-Purple | August | Solberg, Robert | .2000 |
|
4
| 'Christopher Wayne' | Large | Blue/Green | | - | Unknown | Unknown | - | Aden, Paul | --NR-- |
|
5
| 'Colorado River' | Small | Dark-Green | | - | Hybrid | Pale-Lavender | August | Beilstein, Doug & Malloy, Alex | .2005 |
|
6
| 'Cool Blue' | Medium | Blue/Green | | - | Unknown | Med-Lavender | June into July | Benedict, Dr Ralph (Herb) & Benedict, Dorothy & Kuenster, Rod | .2010 |
|
7
| 'Coventry' | Medium | Blue/Green | | - | Unknown | Unknown | - | Minks, Eldren | --NR-- |
|
8
| 'Crazy Quilt' | Medium | Blue/Green | Streaked | White | Unknown | Near-White | July | Lachman, Wm & Lachman, Eleanor & Lydell, Ransom | --NR-- |
|
9
| 'Curlew' | Large | Blue/Green | | - | Unknown | Pale-Lavender | August September October | Smith, Eric & British Hosta and Hemerocallis Society | .1988 |
|