yellow iris
Also known as: daggers; flagon; Jacob's sword; water flag; water skegs; yellow flag; yellow fleur-de-lis
A vigorous herbaceous perennial, forming extensive colonies to 1.5m in height, with waxy grey-green leaves and bright yellow flowers up to 10cm in width, the falls with brown veining in the centre, in mid and late summer
Scientific classification
- Species
- yellow iris (Iris pseudacorus)
- Genus
- Iris
- Family
- Iridaceae
- Harmful if eaten. Wear gloves and other protective equipment when handling
- Toxicity
- Bogs · Herbaceous Perennial
- Plant type
- 1-1.5 metres
- Height
- 1-1.5 metres
- Spread
- Deciduous
- Foliage
- Suckering
- Habit
- Spring · Summer
- Season of interest
- Full sun · Partial shade
- Sunlight
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- Ideal temperature
yellow iris pictures
Distribution of yellow iris
Distribution map
Europe Africa Asia
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Culture
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Toxicity
Harmful if eaten. Wear gloves and other protective equipment when handling
Quick identification of yellow iris
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yellow iris care guide
- Keep root zone evenly moist through growth without stagnant water
- Watering
- Full sun · Partial shade
- Sunlight
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- Ideal temperature
Watering
Keep root zone evenly moist through growth without stagnant water
Fertilizing
FertilizingBalanced iris feed every three weeks in active spring and summer growth
Pruning
PruningRemove any dying foliage in autumn, old flower stems can be cut down after flowering
Propagation
PropagationPropagate by division from midsummer to early autumn, plant immediately in flowering positions
Growing
GrowingGrow in wet, deep, acid, humus-rich soil in full sun or partial shade. It thrives at the margins of large ponds or streams; has the potential to become a nuisance if not managed well so plant with care
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Common pests and diseases
Diseases
May be susceptible to aphid borne viruses, bacterial soft rot and grey moulds (Botrytis)
Pests
May be susceptible to slugs, snails and thrips
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