schlectendaliana Bouché is a synonym of glauca var. glauca.
schubertii requires research.
Canna 'Schwabenland' is a tall Crozy Group cultivar, with dark leaves and red flowers.
Schwabenstreich requires research.
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.
Scorpio requires research.
Secrétaire Chabanne requires research.
Secrétaire Courbet requires research.
Secretary Nicholas requires research.
Secretary Stewart requires research.
seleriana (Kraenzl.) is a synonym of indica var. indica.
sellowi (Bouché) is a synonym of indica var. indica.
sellowii Bouché is a synonym of indica var. indica.
Canna 'Sémaphore' is a medium-sized Crozy Group cultivar, with dark leaves and yellow flowers.
Semeur A. Sannier requires research.
Senateur Millaud requires research.
Senateur Montifiore requires research.
Sénateur Viger requires research.