Canna 'Bubblegum' is a medium-sized Premier Group cultivar, with green leaves and pink flowers.
buekii Weinm. is a synonym of pedunculata Sims.
Buisson fleuri requires research.
Canna 'Bunny' is a small Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Burbank' is a medium-sized Italian Group cultivar, with green leaves and yellow flowers.
Canna 'Burgundia' is a medium-sized Italian Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Burgundy Blush' is a giant Foliage Group cultivar, with dark leaves and red flowers.
Burnt Orange requires research.
Butter Ball requires research.
Butter Snap requires research.
Canna 'Buttercup' is a small Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Butterfly Kisses' is a medium-sized aquatic cultivar, equally at home as a water marginal or in the border, with green leaves and pink flowers.
Canna 'Butterscotch' is a small Crozy Group cultivar, with green leaves and yellow flowers.