Canna 'Jean Krupp' is a medium-sized Premier Group cultivar, with dark leaves and pink flowers.
Canna 'Jean's Joy' is a miniature Miniature Group cultivar, with green leaves and pink flowers.
Jennifer is a synonym of Roma.
Canna 'Jessie Dalebø' is a small Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Jezabel' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.