Phormium tenax, commonly known as New Zealand Flax or Harakeke, is an iconic native plant admired for its tough, strappy foliage and its spectacular Phormium tenax flower spikes. These flowers not only add dramatic height and colour to gardens, but also play a crucial role in supporting native wildlife. In this article, you'll discover everything you need to know about the Phormium tenax flower—from its appearance and growth cycle to its ecological importance and how you can integrate this striking plant into your New Zealand garden.
Phormium tenax, commonly known as the NZ flax or Harakeke, is a flax plant that produces erect, green, sword-like leaves. Stems rise above the foliage in summer to bear twisted-looking flowers that result in black seed pods in autumn, and the nectar produced by the flowers attracts both birds and butterflies. Harakeke grows as a clump to about 2 m tall and the same wide, performing best when planted in full sun on a well-drained site. It is a popular landscape option that is also often used to contrast with other plant colours. Mass planting on a bank not only provides an outstanding display but is also excellent for helping to stabilise the soil.
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