• 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

Phormium tenax

New Zealand flax

New Zealand flax

© � RHS 2002

  • Other common names New Zealand flax
    common flax lily

    flax bush
    New Zealand hemp

    see more
  • Genus Phormium are evergreen perennials, making a large clump of leathery, strap-shaped leaves, with tall panicles of small, tubular flowers in summer

  • Family Hemerocallidaceae / Hemerocallidaceae

  • Details P. tenax is a robust evergreen perennial making a medium-sized clump of dark grey-green, strap-shaped leaves. Tubular, dull red flowers about 4cm in length, in a panicle to 4m in height

  • Plant range New Zealand


  • Foliage Evergreen

  • Habit Clump-forming



  • Full Sun

  • Partial Shade

  • Aspect North-facing or East-facing or South-facing or West-facing

  • Exposure Sheltered or Exposed


  • Chalk


  • Chalk


  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Sand

  • pHAcid, Neutral, Alkaline


  • Ultimate height

    2.5-4 metres

  • Ultimate spread

    1.5-2.5 metres

  • Time to ultimate height

    10-20 years

How to grow

Cultivation Grows best in fertile well-drained soil in full sun. May need protecting in northern climes

Propagation Propagate by seed sown in spring or by division in spring

Suggested planting locations and garden types Low Maintenance Flower borders and beds Architectural City & Courtyard Gardens Coastal Gravel Garden

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