Canna 'Happy Carmen' is a small Crozy Group cultivar, with green leaves and red flowers.
Canna 'Happy Cleo' is a small Crozy Group cultivar, with green leaves and orange flowers.
Canna 'Happy Emily' is a small, with green leaves and yellow flowers.
Canna 'Happy Isabel' is a small, with green leaves and pink flowers.
Canna 'Happy Julia' is a miniature Crozy Group cultivar, with dark leaves and pink flowers.
Canna 'Harmony' is a small Crozy Group cultivar, with green leaves and red flowers.
Canna 'Harvest Yellow' is a medium-sized Crozy Group cultivar, with green leaves and yellow flowers.
Canna 'Heart Throb' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Heart's Desire requires research.
Canna 'Heinrich Seidal' is a medium-sized Crozy Group cultivar, with green leaves and red flowers.
Her Majesty requires research.
Canna 'Herb’s White' is a medium-sized Crozy Group cultivar, with green leaves and white flowers.
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Canna 'Hercule'
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Canna 'Hercule' - see Assaut
Canna 'Herman' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Canna 'Honey Mango' is a medium-sized Crozy Group cultivar, with green leaves and orange flowers.
Canna 'Honeycomb' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Horn' is a small Crozy Group cultivar, with green leaves and pink flowers.
Canna 'Hossegor' is a medium-sized Crozy Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Hungaria' is a medium-sized Crozy Group cultivar, with green leaves and pink flowers.