No. | Cultivar Name | Leaf Color | Variegation | Var Color | Origin | Flower Color | Season | Source | Registered |
1
| 'Cabin Fever' | Blue/Green | | | Hybrid | Unknown | Unknown | Christensen, John | --NR-- |
2
| 'Cadence' | Med-Green | Streaked | White | Unknown | Unknown | Unknown | Livingston, Ron | --NR-- |
3
| 'Cadiz Springs' | Dark-Green | | | Hybrid | Unknown | Unknown | Moore, Jeff | --NR-- |
4
| 'Caid Man' | Blue/Green | | | Hybrid | Near-White | July | Heinz, Jim | --NR-- |
5
| 'Cambria Blue' | Blue/Green | | | Unknown | Unknown | Unknown | Benedict, Dr Ralph (Herb) | --NR-- |
6
| 'Canadian Foreign Affairs' | Light-Green | | | Unknown | Pale-Lavender | July to August | Knechtel, Ken & Ruh, Peter | .2002 |
7
| 'Canary Diamond' | Yellow | | | Unknown | Unknown | Unknown | Vincun, Rachel | --NR-- |
8
| 'Candlelight' | Yellow | | | Hybrid | Near-White | June | Ward, Dr Dick & Ward, Jane | .2005 |
9
| 'Candlewood' | Med-Green | | | Unknown | Pale-Lavender | July | Banyai, Pauline & Asch, Stuart | .2004 |
10
| 'Captain America' | Dark-Green | Marginal | Yellow | Hybrid | Near-White | June to July | Balitewicz, Bob | --NR-- |
11
| 'Captain's Adventure' | Light-Green | Marginal | White | Sport | Pale-Lavender | July to August | Heemskerk, Gerardus | .2009 |
12
| 'Carin's Wedding' | Med-Green | Streaked | White | Unknown | Light-Purple | July to August | Musak, Don & Zilis, Mark | .2012 |
13
| 'Catch of the Day' | Dark-Green | Medial | Yellow | Sport | Near-White | July to August | Solberg, Robert | .2013 |
14
| 'Catcher's Mitt' | Dark-Green | | | Unknown | | | Rawson, Don | --NR-- |
15
| 'Cathedral of Learning' | Light-Green | | | Unknown | Med-Lavender | July to August | Zolock, Steve & Zolock, Sarah | .2007 |
16
| 'Cat's Claw' | Blue/Green | | | Unknown | Unknown | Unknown | Ziarek, Ken | --NR-- |
17
| 'Celtic Dancer' | Med-Green | | | Hybrid | Pale-Lavender | July to August | Dean, Don | .2008 |
18
| 'Center Glow' | Light-Green | Medial | Yellow | Unknown | Unknown | Unknown | Serafin, Viktoria | --NR-- |
19
| 'Cha Cha Cha' | Yellow | | | Unknown | Unknown | Unknown | Vincun, Rachel | --NR-- |
20
| 'Chairman of the Board' | Blue/Green | Streaked | White | Hybrid | Unknown | Unknown | Balitewicz, Bob | --NR-- |
21
| 'Champ' | Med-Green | | | Hybrid | Unknown | June to July | Kwick, Charles | .2016 |
22
| 'Changeling' | Med-Green | Marginal | Yellow | Unknown | Near-White | July to August | Pollock, Ali | .2005 |
23
| 'Chantilly Lace' | Med-Green | Marginal | White | Hybrid | Pale-Lavender | August | Lachman, Wm & Lachman, Eleanor | .1988 |
24
| 'Charles' | Dark-Green | | | Sport | Pale-Lavender | June to July | Schwarz, Jim & Schwarz, Karen | .2014 |
25
| 'Charlie Jane' | Blue/Green | | | Hybrid | Near-White | June to July | Kwick, Charles | .2018 |
26
| 'Chartreuse Fountain' | Yellow | | | Unknown | Unknown | Unknown | Livingston, Ron | --NR-- |
27
| 'Chatham Lightkeeper' | Blue/Green | Streaked | Yellow | Unknown | Unknown | Unknown | Goodenough, Rick | --NR-- |
28
| 'Cheese Louise' | Light-Green | | | Unknown | Unknown | Unknown | Hackbarth, Robert | .2015 |
29
| 'Cherry Flip' | Dark-Green | | | Hybrid | Light-Purple | August | Zilis, Mark & Solberg, Robert | .2012 |
30
| 'Cheyenne' | Med-Green | | | Unknown | Unknown | Unknown | Wade, Van | --NR-- |
31
| 'Chiemsee Twister' | Med-Green | Medial | Yellow | Unknown | Unknown | Unknown | Eschenbach, Volker | --NR-- |
32
| 'Childhood Fantasy' | Blue/Green | | | Hybrid | Unknown | Unknown | Livingston, Ron | --NR-- |
33
| 'Chimney Rock' | Dark-Green | Streaked | White | Hybrid | Med-Lavender | June to July | Kuenster, Rod | .2010 |
34
| 'Chocolate Ripple' | Dark-Green | Streaked | Yellow | Hybrid | Near-White | July to August | Kuenster, Rod | .2008 |
35
| 'Chodai Ginba' | Dark-Green | | | Unknown | Pale-Lavender | July | Kajigawa & Ruh, Peter | .2003 .2018 |
36
| 'Chodai Ginyo' | Blue/Green | | | Sport | Med-Lavender | July to August | Unknown | --NR-- |
37
| 'Chris' | Yellow | | | Unknown | Unknown | June to July | Schwarz, Jim & Schwarz, Karen | .2014 |
38
| 'Chris' Bluemania' | Blue/Green | | | Unknown | Unknown | Unknown | Brinkmann, Christina | --NR-- |
39
| 'Chris' Fufu' | Yellow | | | Unknown | Unknown | Unknown | Brinkmann, Christina | --NR-- |
40
| 'Chris' Misty Prize' | Light-Green | Streaked | Yellow | Nat-Sport | Unknown | Unknown | Brinkmann, Christina | --NR-- |
41
| 'Chris' No. 1' | Light-Green | Medial | White | Unknown | Unknown | Unknown | Brinkmann, Christina | --NR-- |
42
| 'Christmas Eve' | Dark-Green | Medial | White | Sport | Unknown | June to July | Avent, Tony | .2010 |
43
| 'Christmas Island' | Med-Green | Medial | White | Unknown | Unknown | Unknown | Van Eechaute, Danny | --NR-- |
44
| 'Christopher Wayne' | Blue/Green | | | Unknown | Unknown | Unknown | Aden, Paul | --NR-- |
45
| 'Clap Your Hands' | Blue/Green | | | Hybrid | Pure-White | June to July | Dalton, Jim & Dalton, Meg | .2012 |
46
| 'Clarence Owens' | Dark-Green | Medial | Yellow | Hybrid | Pale-Lavender | June to July | Kulpa, John | .2001 |
47
| 'Clayton Burkey' | Blue/Green | | | Unknown | Near-White | July | Burkey, Clayton & Zolock, Steve & Zolock, Sarah | .2005 |
48
| 'Clem Kadiddlehopper' | Blue/Green | | | Unknown | Pale-Lavender | Unknown | Sawyer, Rick | --NR-- |
49
| 'Clifford's Forest Fire' | Med-Green | Marginal | White | Sport | Pale-Lavender | July to August | Clifford, John | .2000 |
50
| 'Cloretta' | Med-Green | Medial | White | Unknown | Unknown | Unknown | Woods, Doyle | --NR-- |
51
| 'Cloud Illusions' | Med-Green | | | Hybrid | Deep-Purple | July to August | Dean, Don | .2022 |
52
| 'Cloud Lime' | Light-Green | | | Unknown | Unknown | Unknown | Serafin, Viktoria | --NR-- |
53
| 'Cloud Sweeper' | Med-Green | | | Hybrid | Near-White | July to August | Zolock, Steve & Zolock, Sarah | .2003 |
54
| 'Clown Belly' | Blue/Green | Streaked | White | Hybrid | Pale-Lavender | June to July | Kuenster, Rod | .2010 |
55
| 'Coach Beets Dotson' | Med-Green | Streaked | Yellow | Unknown | Unknown | July to August | Freeman, Franc | .2011 |
56
| 'Coast to Coast' | Light-Green | Marginal | Yellow | Hybrid | Pale-Lavender | July | Petryszyn, Olga | .2014 |
57
| 'Cochato Creek' | Blue/Green | Streaked | Yellow | Unknown | Unknown | Unknown | Doughty, Chuck | --NR-- |
58
| 'Cochato White Robin' | Blue/Green | Streaked | Yellow | Unknown | Unknown | Unknown | Doughty, Chuck | --NR-- |
59
| 'Cocky Junior' | Med-Green | | | Hybrid | Pale-Lavender | July to August | Kwick, Charles | .2017 |
60
| 'Cogleywood' | Dark-Green | Medial | White | Unknown | Pale-Lavender | July | Shugart, Janet & Crowl, M. & Hansen, Laura | .1999 |
61
| 'Cold Heart' | Light-Green | | | Unknown | Pale-Lavender | June to July | Scheer, Alttara & The American Hosta Society | .2019 |
62
| 'Colesburg Wiggles' | Med-Green | Marginal | Yellow | Unknown | Light-Purple | July to August | Hackbarth, Robert | .2015 |
63
| 'Collector's Gold' | Yellow | | | Unknown | Unknown | Unknown | Janssen, Bill | --NR-- |
64
| 'Colonel Murphy' | Blue/Green | | | Unknown | Med-Lavender | July to August to September | Zolock, Steve & Zolock, Sarah | .2001 |
65
| 'Color Conundrum' | Blue/Green | Streaked | Yellow | Unknown | Unknown | Unknown | Unknown | --NR-- |
66
| 'Colored Lollipop' | Dark-Green | Streaked | White | Unknown | Unknown | Unknown | Van den Top, Jan | --NR-- |
67
| 'Commando' | Med-Green | | | Nat-Sport | Light-Purple | July to August | Schwarz, Jim | --NR-- |
68
| 'Connie Sun' | Yellow | | | Sport | Med-Lavender | July | Snyder, Ron | .2001 |
69
| 'Constitution' | Dark-Green | Marginal | White | Hybrid | Unknown | Unknown | Goodenough, Rick | --NR-- |
70
| 'Contorted Dragon' | Blue/Green | | | Hybrid | Unknown | Unknown | Livingston, Ron | --NR-- |
71
| 'Cornerstone' | Blue/Green | | | Hybrid | Near-White | July | Hanna, Clarence | .2013 |
72
| 'Cosmic Angel Wings' | Blue/Green | Marginal | White | Hybrid | Pale-Lavender | August to September | Kuenster, Rod | .2022 |
73
| 'Cosmic DNA' | Blue/Green | Streaked | Yellow | Hybrid | Near-White | June to July | Kuenster, Rod | .2012 |
74
| 'Cosmic Fantasy' | Med-Green | Streaked | White | Hybrid | Unknown | Unknown | Kuenster, Rod | .2010 |
75
| 'Cosmic Fireball' | Blue/Green | Medial | Yellow | Unknown | Unknown | Unknown | Kuenster,Rod | --NR-- |
76
| 'Cosmic Genes' | Blue/Green | Streaked | Yellow | Unknown | Unknown | Unknown | Kuenster,Rod | --NR-- |
77
| 'Cosmic Knuckles' | Dark-Green | | | Hybrid | Near-White | July to August | Kuenster, Rod | .2015 |
78
| 'Cosmic Lady' | Med-Green | Streaked | White | Hybrid | Unknown | June to July | Kuenster, Rod | .2010 |
79
| 'Cosmic Moon' | Blue/Green | | | Hybrid | Near-White | July to August | Kuenster, Rod | .2015 |
80
| 'Cosmic Moonshine' | Blue/Green | Streaked | Yellow | Hybrid | Med-Lavender | June to July | Kuenster, Rod | .2012 |
81
| 'Cosmic Paint Shaker' | Blue/Green | Streaked | Yellow | Hybrid | Near-White | June to July | Kuenster, Rod | .2012 |
82
| 'Cosmic Secret' | Blue/Green | Streaked | Yellow | Hybrid | Near-White | July to August | Kuenster, Rod | .2013 |
83
| 'Cosmic Warrior' | Med-Green | Streaked | Yellow | Hybrid | Pale-Lavender | June to July | Kuenster, Rod | .2014 |
84
| 'Country Boy' | Yellow | | | Unknown | Unknown | Unknown | Ziarek, Ken | --NR-- |
85
| 'Country Dreaming' | Blue/Green | | | Hybrid | Pale-Lavender | July | Dean, Don | .2013 |
86
| 'Country Warrior' | Blue/Green | Marginal | Yellow | Hybrid | Pale-Lavender | July | Dean, Don | .2017 |
87
| 'Covey' | Med-Green | | | Unknown | Unknown | Unknown | Lydell, Ransom | --NR-- |
88
| 'Cowboy Blue Chrome' | Blue/Green | | | Unknown | Unknown | Unknown | Gamradt, John | --NR-- |
89
| 'Cowboy Gun Metal Blue' | Blue/Green | | | Unknown | Unknown | Unknown | Gamradt, John | --NR-- |
90
| 'Cowboy Lemon Margarita' | Light-Green | | | Unknown | Unknown | Unknown | Gamradt, John | --NR-- |
91
| 'Cowboy Let Us' | Light-Green | | | Unknown | Unknown | Unknown | Gamradt, John | --NR-- |
92
| 'Cowboy Man in Black' | Dark-Green | | | Unknown | Unknown | Unknown | Gamradt, John | --NR-- |
93
| 'Cowboy Up' | Med-Green | | | Unknown | Unknown | July to August | Freeman, Franc | .2011 |
94
| 'Creet wee esta' | Med-Green | | | Unknown | Unknown | Unknown | Livingston, Ron | --NR-- |
95
| 'Crescendo' | Blue/Green | | | Hybrid | Near-White | June to July | Kamp, Gayle | .2001 |
96
| 'Crickett's Mountain Mist' | Blue/Green | Streaked | White | Sport | Pale-Lavender | July to August | Bailey, Crickett | .2017 |
97
| 'Crinkled Leather' | Blue/Green | | | Hybrid | Pale-Lavender | July to August | Dean, Don | .2014 |
98
| 'Crinkles' | Yellow | | | Hybrid | Pure-White | June to July | Goodwin, Randy | .2009 |
99
| 'Crocodile Queen' | Dark-Green | Marginal | White | Sport | Pale-Lavender | June to July | Schwarz, Jim & Schwarz, Karen | .2014 |
100
| 'Crocodile Tears' | Dark-Green | | | Unknown | Unknown | Unknown | Meyer, Bill | --NR-- |
101
| 'Cubra Libra' | Blue/Green | | | Unknown | Unknown | Unknown | Livingston, Ron | --NR-- |
102
| 'Cup of Grace' | Dark-Green | | | Hybrid | Unknown | July to August | Beilstein, Doug | .2009 |
103
| 'Cushing House 1808' | Blue/Green | Marginal | Yellow | Sport | Med-Lavender | July to August | Lydell, Ransom | --NR-- |
104
| 'Cutting Edge' | Blue/Green | | | Hybrid | Pale-Lavender | July to August | Benedict, Dr Ralph (Herb) & Gowen, Hideko | .1999 |
105
| 'Cuyahoga' | Med-Green | Marginal | Yellow | Hybrid | Unknown | July to August | Zilis, Mark | .2009 |
106
| 'Cyclone Wrestling' | Dark-Green | | | Unknown | Unknown | July to August | Freeman, Franc | .2011 |
107
| 'Cyclops' (Soucek) | Blue/Green | | | Unknown | Near-White | July to August | Soucek, Rachel | .2005 |
|