Canna 'speciosa (Roscoe) Hook.' is a medium-sized cultivar, with green leaves and multi-coloured flowers.
Canna 'Spiderman' is a giant Foliage Group cultivar, with green leaves and red flowers.
Spitfire requires research.
Canna 'Spotted Fever' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Spritzii' is a medium-sized Foliage Group cultivar, with green leaves and orange flowers.
Canna 'Stadt Fellbach' is a medium-sized Crozy Group cultivar, with green leaves and orange flowers.
Canna 'Stadtrath Heidenreicht' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Star of India' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Stars and Stripes' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Statue of Liberty' is a tall Italian Group cultivar, with dark leaves and red flowers.
Canna 'Storm Boy' is a medium-sized Crozy Group cultivar, with dark leaves and orange flowers.
Canna 'Strasbourg' is a small Crozy Group cultivar, with green leaves and red flowers.
Strawberries and Cream requires research.
Canna 'Strawberry Delight' is a medium-sized Premier Group cultivar, with green leaves and pink flowers.
Canna 'Striata (1)' is a medium-sized Foliage Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Strike Gold' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Stuttgart' is a tall Foliage Group cultivar, with variegated leaves and pink flowers.
Canna 'Südfunk' is a small Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Suévia' is a medium-sized Italian Group cultivar, with green leaves and yellow flowers.
Canna 'Sugar and Spice' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.