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Phormium tenax

  • hakasustainability
  • Jan 1, 2020
  • 1 min read

Māori name: kōrari, flax

Common name: Harakeke, swamp flax

Botanical name (authority): Phormium tenax J.R.Forst. & G.Forst.


Harakeke (Phormium tenax) is a robust, clump-forming perennial with long, sword-shaped leaves and tall flower stalks with nectar-rich flowers.


It prefers full sun to partial shade and moist, well-drained soils; tolerates wet conditions.


Growth rate

Moderate to fast

Height at maturity

2–3 m

Propagation and planting tips

Propagate from division of clumps or fresh seed; maintain moisture until established.

Ecological values

Provides nectar for birds, especially tūī and bellbird; stabilises soil.

Conservation status

Not threatened (NZPCN)

Benefit for on-farm planting situations

Ideal for riparian planting, erosion control, and providing stock shelter.

References:

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