Warscewiczioides zebrina requires research.
warszewiczii var. flameus Ram. Goyena is a synonym of indica var. indica.
Water Cannas requires research.
Wax Wings requires research.
Canna 'Weinsap Red' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
West Grove requires research.
West Ham requires research.
Canna 'Whispering Spiritgle' is a medium-sized Premier Group cultivar, with green leaves and orange flowers.
White Canna is a synonym of liliiflora Warsc. ex Planch..
White Flaccida requires research.
Canna 'White Princess' is a medium-sized Premier Group cultivar, with green leaves and white flowers.
White Queen requires research.
White Speckles is a synonym of Confetti.
Canna 'White Tiger' is a medium-sized Crozy Group cultivar, with variegated leaves and yellow flowers.
Whitham Pride is a synonym of Whithelm Pride.
Canna 'Whithelm Pride' is a small Premier Group cultivar, with dark leaves and pink flowers.
Wilhelm Beck requires research.
Wilhelm Bofinger requires research.