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Herbaceous PerennialSynonym

Iris halophila

salt-loving blue iris

A tall rhizomatous perennial, reaching up to 90cm high, with narrow, upright leaves to 30cm long. Flowers, borne in summer on branched stems, are coloured white and pale to dark yellow with darker veining and reach up to 8cm in diameter

Synonyms
Iris gueldenstadtiana
Iris halophila
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Yellow White Green
Autumn
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Iridaceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Potentially harmful
Harmful if eaten. Wear gloves and other protective equipment when handling
Genus

Iris may be rhizomatous or bulbous perennials, with narrow leaves and erect stems bearing flowers with 3 large spreading or pendent fall petals, alternating with 3 erect, often smaller, standard petals, in late winter, spring or early summer

Name status

Unresolved

How to grow

Cultivation

Best grown in a rich, neutral to slightly acidic, moist but well-drained soil in full sun

Propagation

Propagate by seed or by division

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildlife gardens
  • Coastal
  • Flower borders and beds
Pruning

Remove any dying foliage in autumn, old flower stems can be cut down after flowering

Pests

May be susceptible to slugs, snails and thrips

Diseases

May be susceptible to aphid-borne viruses, bacterial soft rot and grey moulds; see Iris diseases

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