| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'Cambria Blue' | Medium | Blue/Green | | - | Unknown | Unknown | - | Benedict, Dr Ralph (Herb) | --NR-- |
|
2
| 'Candelabra' | Small | Blue/Green | | - | Unknown | Light-Purple | July into August | Benedict, Dr Ralph (Herb) & Walek, Kevin & The American Hosta Society | .2009 |
|
3
| 'Chickadee' (Benedict) | Medium | Med-Green | Marginal | White | Unknown | Pure-White | August | Benedict, Dr Ralph (Herb) | --NR-- |
|
4
| 'Clarence Nance' | Large | Med-Green | Marginal | Yellow | Unknown | Unknown | - | Benedict, Dr Ralph (Herb) | --NR-- |
|
5
| 'Clyde's Birthday' | Large | Blue/Green | Streaked | White | Hybrid | Unknown | - | Benedict, Dr Ralph (Herb) | --NR-- |
|
6
| 'Connie' | Large | Yellow | Marginal | Greenish White | Sport | Near-White | June into July | Benedict, Dr Ralph (Herb) | .1987 |
|
7
| 'Cool Blue' | Medium | Blue/Green | | - | Unknown | Med-Lavender | June into July | Benedict, Dr Ralph (Herb) & Benedict, Dorothy & Kuenster, Rod | .2010 |
|
8
| 'Coquette' | Medium | Med-Green | Marginal | Creamy White | Hybrid | Light-Purple | August | Benedict, Dr Ralph (Herb) | .1987 |
|
9
| 'Country Gentleman' | Large | Blue/Green | Marginal | Yellow | Unknown | Near-White | June into July | Benedict, Dr Ralph (Herb) & Kuenster, Rod | .2010 |
|
10
| 'Crested Surf' | Medium | Med-Green | Marginal | Creamy White | Hybrid | Light-Purple | August | Benedict, Dr Ralph (Herb) | .1990 |
|
11
| 'Curly Top' | Small | Med-Green | | - | Hybrid | Light-Purple | August | Benedict, Dr Ralph (Herb) | .1985 |
|
12
| 'Cutie' | Medium | Blue/Green | | - | Unknown | Med-Lavender | August September October | Benedict, Dr Ralph (Herb) & Kuenster, Rod | .2010 |
|
13
| 'Cutting Edge' | Large | Blue/Green | | - | Hybrid | Pale-Lavender | July into August | Benedict, Dr Ralph (Herb) & Gowen, Hideko | .1999 |