| Medial (Center) Variegation | Plant Size | Leaf Color | Var Color | Origin | Season | Source | Registered |
| 'Caesar Augustus' | Small | Med-Green | White | Sport | June into July | Ward, Dr Dick & Ward, Jane | .2015 |
| 'Calypso Beat' | Small | Med-Green | White | Sport | July into August | Ziarek, Ken | --NR-- |
| 'Candy Box' | Small | Med-Green | White | Sport | July into August | Van Eechaute, Danny | .2011 |
| 'Captain' | Medium | Blue/Green | White | Unknown | - | Unknown | --NR-- |
| 'Captain Atom' | Small | Med-Green | White | Sport | July | Malloy, Alex | .1999 |
| 'Captain Kirk' | Large | Blue/Green | Yellow | Sport | July | Brill, Kirk | .1999 |
| 'Captain Picard' | Small | Med-Green | White | Unknown | | Rank, Stefan | --NR-- |
| 'Carl A. Francis' | Small | Med-Green | Yellow | Unknown | July | Francis, Carl & Chamberlain, Steve | .2004 |
| 'Carriage Wheels' | Medium | Dark-Green | Yellow | Sport | June into July | Summers, Alex & Walek, Kevin | .2009 |
| 'Cascades' | Medium | Blue/Green | White | Hybrid | July | Lachman, Wm & Lachman, Eleanor | .1993 |
| 'Cat and Mouse' (Hansen) | Miniature | Med-Green | Creamy White | TC Sport | July | Hansen, Hans & Shady Oaks Nursery | .2007 |
| 'Cat in the Hat' | Giant | Med-Green | Yellow | Sport | - | Sisson, Kathie | --NR-- |
| 'Catch of the Day' | Large | Dark-Green | Yellow | Sport | July into August | Solberg, Robert | .2013 |
| 'Cathedral Windows' | Giant | Blue/Green | Yellow | TC Sport | August | Hansen, Hans & Shady Oaks Nursery | .2005 |
| 'Catherine' | Medium | Blue/Green | White | Sport | July into August | Heemskerk, Gerardus | .2011 |
| 'Cat's Eye' | Miniature | Med-Green | Yellow | Unknown | July | Heims, Dan | --NR-- |
| 'Celadon Rainbow' | Miniature | Blue/Green | White | Unknown | July into August | Dye, Kay | .2020 |
| 'Celebration' | Medium | Med-Green | White | Hybrid | - | Aden, Paul | .1978 |
| 'Center Glow' | Medium | Light-Green | Yellow | Unknown | - | Serafin, Viktoria | --NR-- |
| 'Center of Attention' | Medium | Med-Green | Creamy White | Hybrid | July | Kulpa, John | .1999 |
| 'Center Stage' | Small | Med-Green | White | Unknown | July into August | Vaughn, Kevin | .1982 |
| 'Chain Lightning' | Medium | Med-Green | White | Hybrid | July | Ward, Dr Dick & Ward, Jane | .1999 |
| 'Champagne for All' | Medium | Dark-Green | White | Sport | July into August | Van Eechaute, Danny | .2015 |
| 'Champaign Toast' | Medium | Light-Green | Yellow | Hybrid | June into July | Zilis, Mark | --NR-- |
| 'Charlie' | Medium | Blue/Green | Green | Sport | July | Graves, Butch | .2008 |
| 'Cherish' | Small | Med-Green | White | Sport | July | Hansen, Hans | .2002 |
| 'Cherokee' | Large | Dark-Green | Yellow | Sport | July into August | Wade, Van | --NR-- |
| 'Cherry Bomb' | Miniature | Med-Green | White | Hybrid | July | Johnson, Greg | .2004 |
| 'Cherry Pie' | Medium | Med-Green | White | Sport | August to October | Machen, John | --NR-- |
| 'Cherry Tomato' | Miniature | Med-Green | White | Sport | July | Walters Gardens | .2008 |
| 'Chesieres Mountain Lights' | Large | Med-Green | Yellow | Sport | July into August | Hirsbrunner, Liselotte | .2002 |
| 'Cheyenne Morning' | Small | Light-Green | White | Unknown | - | Goodwin, Randy | --NR-- |
| 'Chiemsee Class' | Medium | Med-Green | Yellow | Sport | July | Eschenbach, Volker | --NR-- |
| 'Chiemsee Harlekin' | Miniature | Med-Green | White | Nat-Sport | June into July | Eschenbach, Volker | --NR-- |
| 'Chiemsee Ridiculous' | Miniature | Med-Green | Blue-Green | Unknown | | Eschenbach, Volker | --NR-- |
| 'Chiemsee Twister' | Small | Med-Green | Yellow | Unknown | | Eschenbach, Volker | --NR-- |
| 'Chiemsee Weihnachtssport' | Medium | Dark-Green | White | Sport | July into August | Eschenbach, Volker | --NR-- |
| 'Child of the Queen' | Medium | Blue/Green | Yellow | Sport | - | Van den Top, Jan | --NR-- |
| 'Chinese Dragon' | Medium | Med-Green | Yellow | TC Sport | June into July | Anderson, Jim | --NR-- |
| 'Chris' No. 1' | Medium | Light-Green | White | Unknown | | Brinkmann, Christina | --NR-- |
| 'Christmas Candy' | Medium | Med-Green | White | Sport | July | Van Erven, Dirk | .2002 |
| 'Christmas Cookies' | Medium | Med-Green | White | TC Sport | July | Zilis, Mark | .2003 |
| 'Christmas Eve' | Medium | Dark-Green | White | Sport | June into July | Avent, Tony | .2010 |
| 'Christmas Island' | Medium | Med-Green | White | Unknown | - | Van Eechaute, Danny | --NR-- |
| 'Christmas White' | Small | Dark-Green | Yellow | Unknown | - | Unknown | --NR-- |
| 'Clarence Owens' | Large | Dark-Green | Yellow | Hybrid | June into July | Kulpa, John | .2001 |
| 'Clear Skies' | Medium | Med-Green | White | Sport | July | Campbell-Bauer, Margaret | --NR-- |
| 'Clearfork Delight' | Large | Dark-Green | Yellow | Sport | July | Wade, Van | --NR-- |
| 'Clifford's Comet' | Medium | Dark-Green | White | Sport | July | Clifford, John | .2000 |
| 'Clifford's Stingray' | Medium | Dark-Green | White | Sport | July | Clifford, John & Clifford, Ken | .2000 |
| 'Cloretta' | Medium | Med-Green | White | Unknown | - | Woods, Doyle | --NR-- |
| 'Coat of Many Colors' | Small | Dark-Green | White | Nat-Sport | July | Kwick, Charles | .2021 |
| 'Cogleywood' | Medium | Dark-Green | White | Unknown | July | Shugart, Janet & Crowl, M. & Hansen, Laura | .1999 |
| 'Colesburg Sonny Boy' | Large | Dark-Green | Yellow | Sport | July into August | Hackbarth, Robert | .2015 |
| 'Colin P. Cleghorn' | Medium | Med-Green | White | Unknown | July into August | Chamberlain, Steve | .2014 |
| 'Color a la Mode' | Medium | Dark-Green | White | Hybrid | July | Elslager, Ed | .2000 |
| 'Color Design' | Medium | Dark-Green | White | Unknown | | Van den Top, Jan | --NR-- |
| 'Color Fairy' | Miniature | Dark-Green | Yellow | Sport | August | Hatt, Robert | .2020 |
| 'Color Glory' | Large | Blue/Green | Yellow | Hybrid | - | Aden, Paul | .1980 |
| 'Color Riot' | Small | Med-Green | White | Hybrid | June into July | Tompkins, Chet & Tompkins, Cynthia & Ruh, Peter | .2010 |
| 'Colored Hulk' | Small | Dark-Green | White | Sport | July into August | Heemskerk, Gerardus | .2011 |
| 'Command Performance' | Large | Dark-Green | White | Sport | July | Janssen, Bill | --NR-- |
| 'Compadre' | Medium | Dark-Green | Yellow | Sport | July into August | Ritchey, Allen | .2015 |
| 'Confused' | Medium | Med-Green | White | Sport | July | Beal, R. | .1999 |
| 'Congratulations' | Large | Dark-Green | White | Hybrid | July | Johnson, Ross | .2015 |
| 'Continental Divide' | Large | Dark-Green | Green | Hybrid | June into August | Groothuis, Mike & Petryszyn, Olga | .2008 |
| 'Cool As A Cucumber' | Large | Med-Green | White | Sport | June into July | Walters Gardens | .2012 |
| 'Cora Marie' | Small | Dark-Green | White | Unknown | | Shong, John | --NR-- |
| 'Corn Belt' | Large | Dark-Green | Yellow | TC Sport | June into July | Anderson, Jim | --NR-- |
| 'Cosmic Blaze' | Large | Med-Green | Yellow | Unknown | | Kuenster,Rod | --NR-- |
| 'Cosmic Fireball' | Medium | Blue/Green | Yellow | Unknown | | Kuenster,Rod | --NR-- |
| 'Cosmic Pulsar' | Medium | Med-Green | Yellow | Unknown | | Kuenster,Rod | --NR-- |
| 'Cosmic Wow' | Medium | Dark-Green | White | Unknown | - | Kuenster, Rod | --NR-- |
| 'Cosmos' | Small | Dark-Green | White | Unknown | | Wade, Van | --NR-- |
| 'Country Confessions' | Large | Yellow | Green | Sport | June into July | Spece, Josh | .2020 |
| 'Country Fine Print' | Large | Med-Green | White | Sport | June into July | Spece, Josh | .2020 |
| 'Crazy Daisy' | Large | Dark-Green | Yellow | Unknown | - | Goodwin, Randy | --NR-- |
| 'Crazy Mouse Ears' | Small | Blue/Green | White | Sport | July | Schwarz, Jim | --NR-- |
| 'Cream Delight' | Medium | Med-Green | White | Sport | July | Ford, Richard & Ford, Mary | --NR-- |
| 'Cream Topping' | Medium | Blue/Green | White | Sport | - | Heemskerk, Gerardus | --NR-- |
| 'Creme Latte' | Small | Dark-Green | White | Sport | July | Barta, Jack & Ziarek, Ken | --NR-- |
| 'Crocodile Smile' | Medium | Dark-Green | White | Unknown | June into July | Kulpa, John | .2001 |
| 'Crossroads Bling Bling' | Small | Blue/Green | Yellow | Sport | July into August | England, Tim | .2003 |
| 'Crossview Can Can' | Medium | Med-Green | White | Sport | - | Cross, Leila & Cross, Harold | --NR-- |
| 'Crosswind' | - | Dark-Green | White | Unknown | - | Cross, Peter | --NR-- |
| 'Crystal Blue Persuasion' | Miniature | Blue/Green | White | Unknown | | Naylor Creek Nursery | --NR-- |
| 'Cute as a Button' | Miniature | Med-Green | White | Unknown | - | Goodwin, Randy | .2009 |
| 'Cyclone' | Medium | Dark-Green | White | Sport | July | Schwarz, Jim | .2002 |
| 'Five O'Clock Somewhere' | Large | Blue/Green | Yellow | Sport | June into July | Solberg, Robert | .2004 |
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