Canna 'Russian Red' is a tall Foliage Group cultivar, with dark leaves and red flowers.
Canna 'Safrano' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Saladin' is a medium-sized Crozy Group cultivar, with dark leaves and pink flowers.
Canna 'Salmon Pink' is a small Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Salsa' is a small Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Sarah Louise' is a small Premier Group cultivar, with green leaves and pink flowers.
Canna 'Savennières' is a medium-sized Crozy Group cultivar, with dark leaves and orange flowers.
Canna 'Scarlet Fever' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Scarlet's Rib' is a medium-sized Foliage Group cultivar, with green leaves and orange flowers.
Scented Canna is a synonym of liliiflora Warsc. ex Planch..
Canna 'Schwabenland' is a tall Crozy Group cultivar, with dark leaves and red flowers.
Schwäbische Heimat requires research.
Schwarbriche Heimut is a synonym of Schwäbische Heimat.
Canna 'Scorch' is a medium-sized Foliage Group cultivar, with green leaves and pink flowers.
Canna 'Sémaphore' is a medium-sized Crozy Group cultivar, with dark leaves and yellow flowers.
Canna 'Sentinel' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Canna 'Shell Pink' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Shenandoah' is a medium-sized Crozy Group cultivar, with dark leaves and pink flowers.
Canna 'Showman' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Sicilia' is a medium-sized Italian Group cultivar, with green leaves and yellow flowers.