x hybrida requires research.
x iridifoises requires research.
x orchiodes L.H.Bailey requires research.
xalapensis Horan. is a synonym of indica var. indica.
Canna 'Yara' is a small Crozy Group cultivar, with green leaves and yellow flowers.
Yara Gelb is a synonym of Yara.
Yara Gleb is a synonym of Yara.
Yellow Futurity is a synonym of Liberty™ Sun.
Canna 'Yellow Gal' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Yellow Glow' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Yellow Humbert is a synonym of Yellow King Humbert.
Yellow King Humbert requires research.
Yellow Leopard requires research.
Canna 'Yellow Tiger' is a medium-sized Italian Group cultivar, with variegated leaves and yellow flowers.
Canna 'Yuddharak' is a medium-sized Agriculture Group cultivar, with variegated leaves and yellow flowers.
Zambèze requires research.
Zebra Cole is a synonym of Florence Vaughan.
Zebra Stripe is a synonym of Trinacria Variegata.