Canna 'Centurion' is a tall Crozy Group cultivar, with green leaves and orange flowers.
Canna 'Cerase' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Cerise Beauty' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Cerise Davenport' is a medium-sized Foliage Group cultivar, with green leaves and pink flowers.
Chaméléon is a synonym of Chameleon.
Canna 'Champion (1)' is a medium-sized Italian Group cultivar, with green leaves and yellow 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 'Charise' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Charles Henderson requires research.
Canna 'Charles Molin' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Charles Moore' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Charles Naudin' is a medium-sized Italian Group cultivar, with green leaves and red flowers.
Canna 'Charme' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Charmion requires research.
Canna 'Chaumes' is a small Premier Group cultivar, with green leaves and yellow flowers.
Canna 'Cheerfulness' is a medium-sized Crozy Group cultivar, with green leaves and orange flowers.
Canna 'Chelsea' is a small Premier Group cultivar, with green leaves and yellow 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.