Canna 'Assaut' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Atalanta' is a medium-sized Italian Group cultivar, with green leaves and pink flowers.
Atom bomb requires research.
Canna 'Atronigricans' is a medium-sized Foliage Group cultivar, with dark leaves and yellow flowers.
Canna 'August' is a medium (1.4m) Crozy Group cultivar, with green leaves and orange flowers.
Auguste Cornelis requires research.
Canna 'Aurantiaca zebrina' is a medium-sized Foliage Group cultivar, with variegated leaves and red flowers.
Auribeau requires research.
Aurora requires research.
Canna 'Austra' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Austria' is a medium-sized Italian Group cultivar, with green leaves and yellow flowers.
Canna 'Autumn Dragon' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Autumn Gold' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Avant Garde' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Avenir requires research.
Canna 'Avranches' is a medium-sized Premier Group cultivar, with green leaves and orange flowers.