| No. | Cultivar Name | Plant Size | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
|
1
| 'C.D.F.' | Medium | Light-Green | Marginal | Green | Unknown | | | Jentsch, Klaus | --NR-- |
|
2
| 'Call of the Wild' | Large | Blue/Green | Marginal | Yellow | Unknown | | | Kuenster, Rod | --NR-- |
|
3
| 'Cally Colossus' | Medium | Med-Green | | | Unknown | Med-Lavender | | Wickenden, Michael | --NR-- |
|
4
| 'Captain Picard' | Small | Med-Green | Medial | White | Unknown | | | Rank, Stefan | --NR-- |
|
5
| 'Carson' | Medium | Med-Green | - | - | Unknown | - | - | Unknown | --NR-- |
|
6
| 'Caryl's Fancy' | Medium | Blue/Green | Marginal | Light Green | Unknown | - | - | Vaillancourt, Caryl | --NR-- |
|
7
| 'Chartreuse Spoons' | Medium | Light-Green | - | - | Unknown | Pale-Lavender | July into August | Livingston, Ron | --NR-- |
|
8
| 'Checkerboard II' | Large | Med-Green | - | - | Unknown | Pale-Lavender | July | Unknown & Walek, Kevin | .2009 .2018 |
|
9
| 'China Gold' | Large | Yellow | - | - | Hybrid | - | - | Goodenough, Rick | --NR-- |
|
10
| 'Chirp' | Miniature | Light-Green | - | - | Sport | Light-Purple | July | Zilis, Mark | --NR-- |
|
11
| 'Chris' Bluemania' | Large | Blue/Green | | | Unknown | | | Brinkmann, Christina | --NR-- |
|
12
| 'Chris' Flashdance' | Small | Med-Green | Streaked | White | Unknown | | | Brinkmann, Christina | --NR-- |
|
13
| 'Clattering Water' | Medium | Blue/Green | - | - | Sport | Med-Lavender | - | Fransen, Marco & Fransen, Joyce | --NR-- |
|
14
| 'Clean Lines' | Medium | Med-Green | - | - | Unknown | Light-Purple | August | Livingston, Ron | --NR-- |
|
15
| 'Conquistador' | Large | Blue/Green | - | - | Hybrid | Light-Purple | July into August | Livingston, Ron | --NR-- |
|
16
| 'Cora Marie' | Small | Dark-Green | Medial | White | Unknown | | | Shong, John | --NR-- |
|
17
| 'Covey' | Large | Med-Green | - | - | Unknown | - | - | Lydell, Ransom | --NR-- |
|
18
| 'Cubra Libra' | Large | Blue/Green | - | - | Unknown | - | - | Livingston, Ron | --NR-- |
|