Variations 
Kniphofia uvaria 	var grandiflora
This perennial and produces scarlet flowers at the top of the flower head becoming orange yellow to yellow towards the base.  The flowers are held above the foliage on a leafless scape up to 1.7 m (5 ft) tall.

Kniphofia uvaria 	var nobilis
This perennial produces scarlet and orange flowers in a large flower head that is held above the foliage on a leafless scape up to 1.8 m (5½ ft) tall.

Cultivar
'Jade Green'
This plant produces green flowers that turn cream then white appearing during autumn.