Kniphofia caulescens

Red hot poker

Reader rating

From 4 ratings

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Key information

Plant type

Hardy perennial

Flower colour






Skill level


photo by Visions, copyright GAP Photos (61818)

Plant details

Most red hot pokers (kniphofias) are grown primarily for their showy, torchlike flower heads, but this unusual species is also valued for the tufts of blue-green narrow leaves. The 1m tall flowers arrive in late summer and are yellow and coral red. This plant is toxic If eaten and can irritate eyes and skin.

Family: Asphodelaceae

Genus: Kniphofia

Species: caulescens

Plant type: Hardy perennial

Flower colour: Orange

Foliage colour: Blue-green

Feature: Flowers

Sun exposure: Full sun

Soil: Well-drained/light, Clay/heavy, Acidic, Chalky/alkaline, Moist

Hardiness: Hardy

Skill level: Beginner

Height: 100cm

Spread: 60cm

Time to plant seeds: February to May

Time to divide plants: March to April

Reader reviews


good advice as I was just going to divide and move them in October so now I know its you can tell I am a beginner so all advice is well received.....


I bought a Kniphofia caulescens'John May's form) this year from the local garden centre and they were not willing to commit themselves as to how hardy they are so I am hoping this info is correct in saying they are hardy. As a precaution I have covered the plant with fleece as I thought a winter like last year may finsih it off!! Even though we had a cold wet summer it doubled in size and put up three flower spikes. I like the blue-green leaves they look attractive on their own - all in all good, attractive and architectural plant. After that write up I hope it now does survive the winter!!


Follow up to my last review. Even though I fleeced and dry mulched my plant it has rotted over the winter. I placed my plant at the bsae of a South facing wall with a lot of hort. grit added at planting. After all the care I took I feel that to say the plant is hardy in the North West of England is a little misleading. I would still give the plant 4 stars as it is such a magnificent plant.


I live in the cold wet North West. I have left my red hot poker overwinter with all its leaves in situ. it seems to have done the trick and the crowns look healthy. The flowers are abundant and magnificent in it's second year but beware - this is a very large plant which looks wonderful f you have left it enough room to spread!

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