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XERONEMA callistemon
Commonly known as Poor knight's lily
A perennial herb with bright green sword-like leaves similar to an iris. A long stem emerges from the centre of the clump of leaves bearing a Callistemon-like flower with masses of coral-red stamens tipped with yellow anthers
Further Reading....
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Red
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Height1m (39in)
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Spread1m (39in)
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HerbaceousEarly in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.Flower clusters begin growing vertically then horizontally.
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Half hardy - unheated greenhouse / mild winterHardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F)
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Full sun
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Partial shade
XERONEMA callistemon
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Additional FeaturesGood to knowExcellent for container planting. Flowers more quickly if rootbound. Is said to take up to 15 years to flowerPests & DiseasesSlugs, snails.Place of originNew Zealand (Poor Knights Island)
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Garden Location/ConditionsGreenhouse / conservatoryNot the sort of plants to be grown outside where there are likely to be frosts. These plants need to be grown in a conservatory or cool greenhouse or at least brought inside for the winterPatio / pot plants
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HardinessFrost hardy (down to -5)
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Soil ConditionsFertile moist well-drained soil
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Herbaceous Plants - Video Collection
- Dividing Herbaceous Perennials - Video Tip ondemand_video
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- Supporting Plants - Video Tip ondemand_video
- Dead heading meconopsis - Video Tip ondemand_video
- Dead heading Delphiniums - Video Tip ondemand_video
- Feeding herbaceous peonies - Video Tip ondemand_video
- Overpotting Problems - Video Tip ondemand_video
Xeronema - Growing Guide
1m (39in)
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1m (39in) |
Useful extras...

Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
2 options from £6.00

Garden Goodies
Slate Plant Labels
These wonderfully tactile natural slate plant labels are hand made in Cornwall and come with a chalk pen.
Just stick them in your pot or border. Pack of 6.
Only £10.20