Canna 'Colonel Voillard' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Colorado requires research.
Canna 'Columbia' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Columbus requires research.
Canna 'Commandant Dubois' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Commandant Faurax' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Commandant Fournier requires research.
Commandant Marchand requires research.
compacta Roscoe f. Cinnabrina requires research.
compacta-grandiflora requires research.
Comte d'Hautemart requires research.
Comte de Estoil requires research.
Comte de Ganay requires research.
Comte de Sachs requires research.
Comte de Turin requires research.
Comte Grabovski requires research.
Comte H. de Choiseul requires research.
Comte Raoul Chandon de Briailles requires research.
Comtesse Clo requires research.