Japanese roof iris
Also known as: roof iris; wall flag; wall iris
An upright perennial, to around 40cm high, with fans of sword-shaped, ribbed green leaves. Flowers are pale violet streaked with purple, or occasionally white, with strongly ruffled edges to both standards and falls
Scientific classification
- Species
- Japanese roof iris (Iris tectorum)
- Genus
- Iris
- Family
- Iridaceae
- Harmful if eaten. Wear gloves and other protective equipment when handling
- Toxicity
- Herbaceous Perennial
- Plant type
- 0.5-1 metres
- Height
- 0.1-0.5 metres
- Spread
- Deciduous
- Foliage
- Clump forming
- Habit
- Spring · Summer
- Season of interest
- Full sun · Partial shade
- Sunlight
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- Ideal temperature
Japanese roof iris pictures
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Distribution of Japanese roof iris
Distribution map
China
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Culture
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Toxicity
Harmful if eaten. Wear gloves and other protective equipment when handling
Quick identification of Japanese roof iris
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Japanese roof iris care guide
- Moderately moist soil, reduce watering volume once autumn foliage fades
- Watering
- Full sun · Partial shade
- Sunlight
- Information to be completed
- Ideal temperature
Watering
Moderately moist soil, reduce watering volume once autumn foliage fades
Fertilizing
FertilizingIris phosphorus rich feed every three weeks spring before blooming stage
Pruning
PruningRemove spent flower stems in summer, and any dying foliage in autumn
Propagation
PropagationPropagate by division, see dividing iris for more detailed advice
Growing
GrowingGrow in well-drained, fertile, neutral to slightly acid soil in full sun
People also ask
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Common pests and diseases
Diseases
May be susceptible to aphid-borne viruses, bacterial soft rot and grey moulds; see Iris diseases
Pests
May be susceptible to slugs, snails and thrips
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