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Apodasmia similis, commonly known as Oioi or Jointed Wire Rush, is a unique and attractive New Zealand native plant.




  • Growth Habit: Apodasmia similis is a clump-forming perennial plant that typically grows in dense tufts or mats. It has jointed, wiry stems that give it an interesting architectural appearance.
  • Leaves: The leaves of Apodasmia similis are reduced to sheaths that wrap around the stems, rather than having typical leaf blades. These sheaths are often dry and papery in texture.
  • Flowers: The flowers of this plant are small and inconspicuous, with a brownish color. They are borne in spikelets at the tips of the stems.
  • Overall Appearance: Oioi has a grass-like appearance, and its unique jointed stems give it an interesting texture that adds visual interest to garden landscapes.


Growing Conditions:


  • Sunlight: Apodasmia similis thrives in full sun to partial shade. It prefers bright light conditions.
  • Soil: This plant prefers well-draining, sandy or loamy soils. It can tolerate coastal and saline conditions, making it suitable for gardens near the sea.
  • Watering: Oioi is well-adapted to moist conditions and can tolerate periods of inundation. It appreciates regular watering, especially during dry spells.
  • Temperature: Apodasmia similis is well-suited for temperate and coastal climates. It can tolerate light frosts but may require protection in colder regions with harsh winters.
  • Maintenance: This plant is relatively low-maintenance. Trim back any dead or discolored stems as needed to maintain its appearance.


Apodasmia similis is a popular choice for coastal and wetland gardens, as it can help stabilize soil in coastal areas and provide erosion control. Its unique texture and growth habit make it an excellent addition to rock gardens, borders, or as a ground cover in specific landscape designs. Additionally, it provides habitat and food sources for local wildlife, contributing to the ecological balance in the area where it grows. As a native New Zealand plant, it also holds cultural significance and is used in traditional Māori weaving.

Apodasmia similis (oioi)

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