TyTy Orange requires research.
TyTy Red is a synonym of Red King Humbert.
Canna 'Ulrich Brunner' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Umbria requires research.
Canna 'Una' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Uncle Sam' is a tall Italian Group cultivar, with green leaves and orange flowers.
Canna 'Unique' is a medium-sized Foliage Group cultivar, with green leaves and orange flowers.
Canna 'Upton' is a small Crozy Group cultivar, with green leaves and orange flowers.
Uranus requires research.
Canna 'Uvurderlig' is a medium-sized Foliage Group cultivar, with green leaves and red flowers.
Vainquer is a synonym of Assaut.
Vainqueur_x000D_
Canna 'Vainqueur'
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see Assaut_x000D_
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Canna 'Vainqueur' - see Assaut
Canna 'Valbonne' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Valentine requires research.
Van dem Berg requires research.
Canna 'Van Houttei' is a tall Foliage Group cultivar, with dark leaves and red flowers.
Vanilla requires research.
Vanilla Pop requires research.
variabilis Willd. is a synonym of indica f. Variabilis.
variegata Besser is a synonym of indica var. indica.