Cultivars
'Citron'
This plant has cyathiform (bowl-shaped) flowers that are primrose yellow.

'Peggy Ballard'
This plant produces large flowers up to 80mm (3in) across and is deep reddish on the outside with a purplish pink inside that has dark veins.

'Phillip Ballard'
This plant produces dark blue-black flowers.

'Pluto'
This plant has smaller flowers that are purple outside and greenish on the inside.

'Yellow Button'
This plant produces small cyathiform (cup-shape) flowers that expand open with age.