Kniphofia is a genus of perennial flowering plants in the family Asphodelaceae (order Asparagales), comprising around 73 accepted species as of 2025. All species are native to Africa, with the greatest diversity concentrated in southern and eastern Africa; one species, K. uvaria, has become naturalised in parts of Europe, North America, and beyond. Common names for plants in this genus include red hot poker, torch lily, tritoma, and poker plant — names that refer to the genus's most distinctive feature: tall, dense spikes of tubular flowers in vivid shades of red, orange, and yellow, frequently bicoloured and held well above the foliage.
The genus encompasses both herbaceous and evergreen species. Herbaceous species and their hybrids produce narrow, grass-like leaves ranging from 10 to 100 cm in length, while evergreen species bear broader, strap-shaped foliage that may reach 1.5 m long. In all cases the flowering spikes rise conspicuously above the leaves, creating a striking architectural silhouette that has made many species and cultivars popular in ornamental horticulture.
The flowers are notably nectar-rich and serve as an important food source for a range of wildlife. In Africa they attract bees, sugarbirds, and sunbirds; in gardens outside their native range they draw hummingbirds and New World orioles. Unusually, the Ethiopian wolf (Canis simensis) has been recorded feeding on the nectar of K. foliosa, making it the only large carnivore thought to act as a potential pollinator for any plant.
Kniphofia was first described as a genus by Conrad Moench in 1794, who recognised the species now known as K. uvaria as distinct from the genera Aletris and Veltheimia. The genus name honours Johann Hieronymus Kniphof (1704–1763), a German physician and botanist known for his early illustrated botanical works.
Etymology
The genus name Kniphofia honours Johann Hieronymus Kniphof (1704–1763), an 18th-century German physician and botanist. The genus was erected by Conrad Moench in 1794, who judged the plant now called K. uvaria sufficiently distinct from Aletris and Veltheimia to warrant a new name.
Distribution
All species of Kniphofia are native to Africa, with the majority occurring in southern and eastern Africa — notably South Africa, Lesotho, KwaZulu-Natal, Ethiopia, and Tanzania. A small number of species extend into central Africa, Yemen, and Madagascar. K. uvaria has been widely naturalised beyond Africa, including in Mexico, Spain, Turkey, California, Oregon, Washington State, North Carolina, and St. Helena.
Ecology
The tubular flowers of Kniphofia produce abundant nectar and are adapted for pollination by birds and insects. In their native African range, sugarbirds and sunbirds are primary pollinators, along with bees. The Ethiopian wolf (Canis simensis) has been observed lapping nectar from K. foliosa inflorescences and is considered the only known macropredator to function potentially as a plant pollinator. In introduced ranges, hummingbirds and New World orioles also visit the flowers.
Cultivation
Several Kniphofia species are grown as ornamental garden plants, valued for their bold upright form and long flowering season. Species cultivated for garden use include K. galpinii, K. northiae, K. rooperi, and K. thomsonii. Beyond the species, numerous named cultivars of mixed or uncertain parentage have been selected; several have received the Royal Horticultural Society's Award of Garden Merit.
