Colette requires research.
Canna 'Colibri' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Colonel Voillard' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Colortime' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Colossal White requires research.
Canna 'Columbia' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.