Red Simplex
Canna 'Red Simplex' is a medium-sized Foliage Group cultivar, with green leaves and red flowers.
Red Spiritiae
Red Spiritiae is a synonym of The President.
Red Stripe
Red Stripe is a synonym of Auguste Ferrier.
Red Tiger
Canna 'Red Tiger' is a medium-sized Crozy Group cultivar, with variegated leaves and red flowers.
Red Tyrol
Canna 'Red Tyrol' is a small Crozy Group cultivar, with dark leaves and red flowers.
Red Velvet
Canna 'Red Velvet' is a tall Foliage Group cultivar, with variegated leaves and red flowers.
Red Wine
Red Wine requires research.
reevesii
reevesii is a synonym of flaccida.
reflexa Nees ex D.Dietr.
reflexa Nees ex D.Dietr. is a synonym of pedunculata Sims.
Regal Red
Regal Red is a synonym of indica f. Regal Red.
Reichskanzler Fürst Hohenlohe
Canna 'Reichskanzler Fürst Hohenlohe' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Reign of Stuttgart
Reign of Stuttgart requires research.
Reine Charlotte
Reine Charlotte is a synonym of Kønigen Charlotte.
Reiss
Reiss requires research.
Rendatleri
Rendatleri requires research.
Rendatleri rotundifolia vera
Rendatleri rotundifolia vera requires research.
Rene
Canna 'Rene' is a small Crozy Group cultivar, with dark leaves and pink flowers.
Restormel
Restormel requires research.
Revisiting Canna ‘Triomphe’
Canna 'Triomphe' is a medium-sized Premier Group cultivar, with dark leaves and red flowers
Revisiting Canna ‘Daniel Hooibrenk’
Canna ‘Daniel Hooibrenk’ is a medium sized Foliage Group cultivar; dark green foliage, large, acuminate shaped, maroon margin, upright habit; spikes of flowers are erect, self-coloured orange-red, staminodes are narrow,…