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.
Canna 'Hellas' is a medium-sized Italian Group cultivar, with green leaves and multi-coloured flowers.
Canna 'Henri Cohn' is a medium-sized Premier Group cultivar, with dark leaves and pink 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.