Canna 'Harvest Gold' is a medium-sized Premier Group cultivar, with green leaves and yellow flowers.
Canna 'Heart Throb' is a small Crozy Group cultivar, with green leaves and multi-coloured flowers.
Heidenreich requires research.
Helen Gould requires research.
Hélène (Princess of Montenegro) requires research.
Heliconiæfolia requires research.
Henri Cornevon requires research.
Henri de Vilmorin requires research.
Henri Foulquier requires research.
Henri Guichard requires research.
Henri Louis Vilmorin requires research.
Henri Pasquier requires research.
Henri Seidel requires research.
Henriette requires research.
Henry A. Dreer requires research.
Her Majesty requires research.
Herculus requires research.
Canna 'Herman' is a medium-sized Crozy Group cultivar, with dark leaves and red flowers.
Herman Adolf Hesse requires research.