J. Aymard requires research.
J. Buchan is a synonym of Joseph Bischau.
J. Cordiaux requires research.
Canna 'J. Hollman' is a medium-sized Premier Group cultivar, with green leaves and orange flowers.
J. Memoreau requires research.
J. Montel requires research.
Canna 'J.B. van der Schoot' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'J.C. Vaughan' is a medium-sized Crozy Group cultivar, with dark leaves and pink flowers.
Canna 'J.D. Cabos' is a medium-sized Crozy Group cultivar, with dark leaves and orange flowers.
J.D. Eisele requires research.
J.G. Baker requires research.
J.S. Lochner is a synonym of Kønigen Charlotte.
Jack Beanstalk requires research.
Jackpot requires research.
Canna 'jacobiniflora T. Koyama & Nb. Tanaka' is a small cultivar, with green leaves and red flowers.
Canna 'Jacobs Coat' is a medium-sized Foliage Group cultivar, with green leaves and multi-coloured flowers.
Jacquard requires research.
Jacqueminot Bonniford requires research.
jacquinii Bouché is a synonym of paniculata.
Canna 'Jadwiga' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.