Canna 'Champigny' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Chanteclair' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Chappaqua' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'Charge' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'Charles Hubert' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Charles Naudin' is a medium-sized Italian Group cultivar, with green leaves and red flowers.
Canna 'Charlotte' is a medium-sized cultivar, with dark leaves and red flowers.
Canna 'Chatei discolor' is a tall Foliage Group cultivar, with dark leaves and red flowers.
Canna 'Chatei grandis' is a giant Foliage Group cultivar, with dark leaves and red flowers.
Canna 'Cherokee' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'Cherry Margarita' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'Cherry Red' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Chevalier Besson requires research.
Canna 'Chevreuil' is a small Crozy Group cultivar, with green leaves and red flowers.
Canna 'China Ruby' is a medium-sized cultivar, with green leaves and red flowers.
Canna 'Chocolate Cherry' is a medium-sized cultivar, with dark leaves and red flowers.