Oscar Dannecker requires research.
Canna 'Osric' is a small Premier Group cultivar, with green leaves and pink flowers.
Othello requires research.
Canna 'Ottawa' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
ottonis (Bouché) Kraenzl. is a synonym of paniculata.
Out of Africa is a synonym of Red King Humbert.
P. Marquant requires research.
P.J. Berkman is a synonym of P.J. Berkmans.
Canna 'P.J. Berkmans' is a small Crozy Group cultivar, with green leaves and red flowers.
Canna 'Pacha' is a tall Foliage Group cultivar, with dark leaves and red flowers.
Pacific Beauty is a synonym of Sémaphore.
Paddy’s Red is a synonym of La France.
Painted Aunt requires research.
Painted Doll requires research.
Canna 'Pale Beauty' is a small Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Pale Pink' is a small Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Pallag Szépe' is a small Crozy Group cultivar, with green leaves and pink flowers.
pallida latifolia requires research.
pallida Roscoe is a synonym of indica var. indica.
Pallida Variegata is a synonym of Bengal Tiger.