Sub-species
subsp. quadrans
This plant has flowers that have more reddish hairs on the flower.

Cultivars
'Bush Emerald'
This plant grows to 1m (3ft) and produces red-green flowers. It prefers an open sunny hot position and tolerates light frost.

'Bush Eclipse'
This plant grows to 1m (3ft) and produces black-green flowers. It prefers an open sunny hot position and tolerates light frost.