surinamensis Bouché is a synonym of indica var. indica.
Susquehana requires research.
Suzanne requires research.
Sweet Heart is a synonym of Sweetheart.
Sweetheart requires research.
sylvestris Roscoe is a synonym of tuerckheimii Kraenzl..
T. D. Eisele requires research.
T.S. Ware requires research.
T.W. Turner requires research.
Canna 'Tabitha Cole' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Tafraout' is a small Crozy Group cultivar, with green leaves and red flowers.
Taj Mahal is a synonym of Pride of India.
Canna 'Tali' is a small Crozy Group cultivar, with dark leaves and orange flowers.
Talia is a synonym of Thalie.
Talisman is a synonym of Frau Gartenburg.
Tall Peach requires research.
Tall White requires research.
Canna 'Tama-Tulipa' is a medium-sized Foliage Group cultivar, with green leaves and multi-coloured flowers.
Tamarlane requires research.