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apodasmia similis nz

Apodasmia similis NZ, more commonly known as Oioi or jointed rush, is an iconic native grass-like plant prized for its resilience and striking appearance throughout New Zealand landscapes. Whether you’re restoring wetlands, planting along coastal margins, or seeking a sophisticated, architectural grass for garden borders, Apodasmia similis offers both ecological benefits and unique beauty. This versatile species thrives in a range of conditions, making it a must-have for gardeners and landscapers seeking hardy, low-maintenance natives. Discover how Oioi can elevate your next garden project while supporting local biodiversity.

Apodasmia similis (Oi Oi)

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Oi Oi, Jointed Wire Rush

Apodasmia similis, commonly known as Oioi or Jointed Wire Rush, is a hardy native grass-like plant found throughout New Zealand. It is ideal for coastal areas, wetland restoration, and native revegetation projects due to its tolerance of salt winds and periodic inundation. Oioi forms attractive clumps of fine, jointed stems with a silvery-green tone, providing year-round interest as it grows to 60 cm in height and 50 cm in width. This plant is low-maintenance, evergreen, and excellent for erosion control and habitat restoration.

Apodasmia similis growing in a rock garden.
  • Suited to regions:
    All regions
  • Plant type:
    Grasses
  • Height:
    60 cm
  • Spread:
    50 cm
  • Tolerances:
    Coastal, Extended dry periods, Hardy, Wet, Wind
  • Garden uses:
    Borders, Living areas, Paths & Steps, Ponds
  • Garden styles:
    Alpine, Architectural, Backyard, City & Courtyard, Coastal, Frontyard, Japanese, Modern, Native, Riparian
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Apodasmia similis (Oi Oi)

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What is Apodasmia similis (Oioi)?

Apodasmia similis is a native reed, instantly recognizable for its upright, jointed stems that range from green to bronze, swaying gracefully in the wind. Unlike traditional grasses, Oioi is a rush, meaning it forms dense stands of hollow stems rather than leafy blades. This makes it an especially striking choice for gardens where texture, movement, and New Zealand authenticity are desired.

Where to Grow Apodasmia similis NZ

Oioi is naturally found along coastal areas, salt marshes, and damp lowland regions throughout New Zealand. Its exceptional tolerance for wind, salt spray, and periodic flooding makes it ideal for challenging sites:

If you’re looking for other hardy natives for similar environments, Lomandra Lime Divine also thrives in windswept, exposed locations and works well as a border grass alongside Oioi.

Ecological Benefits and Plant Uses

Apodasmia similis NZ is a true champion for habitat restoration. Its dense stems provide shelter for native wildlife and offer excellent stabilisation for soils in erosion-prone areas. Oioi’s adaptability makes it useful for:

If your project focuses on wetland ecosystems, consider pairing Oioi with Schoenus pauciflorus (Bog Rush) and Juncus usitatus (Common Rush), both of which are excellent rushes for wetland habitats.

Landscaping with Apodasmia similis

Oioi brings a refined elegance to modern and native-style gardens. Its upright form and subtle bronzed tones look stunning in mass plantings, alongside rock features, or as a soft screen. For alpine-themed gardens, combining Apodasmia similis with Chionochloa flavescens (Snow Tussock) can create a beautiful blend of native grasses with contrasting textures.

For gardeners seeking a shade-tolerant option with similar grassy appeal, Liriope 'Elmarco' is a fantastic choice for low borders and layered understory planting.

How to Care For Apodasmia similis NZ

Oioi is an easy-care plant. It prefers moist to wet soils but is highly tolerant of drought and poor drainage once established. Plant in full sun for best colour and density, but partial shade is also suitable. Minimal maintenance is required: simply tidy old stems in late winter if desired. Regular mulching helps suppress weeds and retain moisture during dry periods.

Why Choose Apodasmia similis NZ for Your Garden?

With its resilience, ecological benefits, and structural beauty, Apodasmia similis is a top choice for sustainable, attractive New Zealand gardens. Its combination of form and function ensures your landscape is both environmentally friendly and visually striking—an investment in both garden design and native biodiversity. Explore our range of NZ natives to complement Oioi, and discover lasting solutions for your next planting project.


Contact us

Whether you need assistance finding the plant you’re looking for or you simply want to know more about who we are and what we do, we invite you to get in touch with us today. A member of The Plant Company team will get back in touch as soon as possible.

Lomandra Frosty Tops and Rhododendron Scented Sun are classic choices, but adventurous gardeners will enjoy Carex Frosted Curls, Macropiper excelsum, and Westringia Low Horizon.
–The Plant Company

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