Coles Pale Superba requires research.
Colette requires research.
Canna 'Colibri' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Colomars' is a medium-sized cultivar, with dark leaves and red flowers.
Canna 'Colonel Buisson' is a medium-sized cultivar, with green leaves and multi-coloured flowers.
Canna 'Colonel Dodds' is a small cultivar, with green leaves and red flowers.
Canna 'Colonel Voillard' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Color Clown is a synonym of Percy Lancaster.
Canna 'Colortime' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Colossal' is a medium-sized cultivar, with green leaves and red flowers.
Colossal White requires research.
Canna 'Columbia' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.