Canna Red King Humbert with all red flowers and all dark colored leaves, 1.8 meters tall in my garden. Red King Humbert is sterile and therefore does not set seed. Red King Humbert is a sport from Yellow King Humbert a chimera (plant tissue of more than one genotype), however as Red King Humbert is from a chimera it too potentially has the genes and (may) show growth or flowers referring back to its parent Yellow King Humbert. There are three Humbert cannas in total you can read more about them here, The Heirloom Humbert Cannas