Plants 1-1.5 m tall. Flowers of almost any colour, 10-16 cm wide, 10-20 in an erect congested spike. Summer.
Grown extensively for cut flowers and exhibition. This group originated with F1 hybrids of G. dalenii and G. oppositiflorus which were marketed as G. 'Gandavensis' by Van Houtte in Belgium around 1840. G. cardinalis, G. cruentus, G. papilio, G. saundersii and others have also contributed to modern polyploid cultivars such as:
Flowers pure white, ruffled lobes, cream inside tube.
Flowers dark purple, almost black.
Flowers blue-mauve with cream-white blotch on lower segments.
Flowers deep orange.
Flowers purple with ruffled lobes.
Flowers dark red.
Flowers gold, with tangerine picotee edges.
Flowers bright yellow.
Flowers pale lime green, with ruffled lobes.
Flowers ruffled lilac, shading to white in centre.
Flowers orange-red.
Flowers pure white.
Flowers golden yellow with large orange-red patch on lower lobes and ruffled edges.
Flowers deep violet.
Flowers rose-pink shading to white in centre.
Flowers rose-magenta with white centre.
Flowers lemon yellow.
Flowers orange-salmon with red shading in centre.
Flowers bright pink with red centre and ruffled lobes.
Flowers deep purple.
Flowers magenta with a white ring in centre.
Flowers deep rose.
Flowers red with white throat.
Flowers white with some yellow shading in throat.
