• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Iris latifolia

English iris

English iris

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  • Other common names English iris
    great bulbous iris

    Pyrenean flag

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  • Synonyms Iris xiphioides

  • Genus Iris may be rhizomatous or bulbous perennials, with narrowly 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

  • Family Iridaceae / Iridaceae

  • Details

    I. latifolia is a bulbous perennial to 60cm tall, with erect, narrowly lance-shaped leaves and violet, violet-blue or white flowers 8-10cm wide, each fall whitish at the base

  • Plant range Pyrenees, Spain


  • Foliage Deciduous

  • Habit Bushy



  • Full Sun

  • Aspect South-facing or West-facing

  • Exposure Exposed or Sheltered


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilSand, Loam, Chalk

  • pHAlkaline, Neutral


  • Ultimate height

    0.5-1 metres

  • Ultimate spread

    0-0.1 metre

  • Time to ultimate height

    2-5 years

How to grow

Cultivation Grow in well-drained neutral or slightly alkaline soil. May be naturalised in grass

Propagation Lift and propagate by division in early autumn. Propagate by seed; sow seeds in cold frame in spring or autumn

Suggested planting locations and garden types Flower borders and beds City & Courtyard Gardens Coastal Cottage & Informal Garden

How to care

Pruning Remove the foliage once it has died down

Pests May be attacked by slugs and snails

Diseases May be subject to grey moulds and iink disease (iris diseases)

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