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Apodasmia similis OiOi

Apodasmia similis oioi, also known simply as oioi or jointed wire rush, is a versatile and striking New Zealand native plant prized for its slender reed-like stems and adaptability. With its elegant vertical lines and subtle blue-green hues, apodasmia similis oioi is a favourite for coastal gardens, wetland restoration projects, and low-maintenance landscaping. Its ability to tolerate salt, wind, and periodic inundation makes it a popular choice for challenging sites throughout Aotearoa.

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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Why Choose Apodasmia similis oioi for Your Garden?

One of the standout features of apodasmia similis oioi is its hardiness. It thrives in poor, damp, or saline soils and copes well with coastal exposure, making it perfect for coastal boundaries, rain gardens, and alongside ponds or streams. Its upright form provides architectural structure and movement to planting schemes, while the soft rustling stems add a tranquil presence to the landscape.

Oioi’s salt tolerance and sturdy rhizomatous roots also play a role in controlling erosion, particularly on coastal and riverside sites. That makes apodasmia similis oioi equally effective for large-scale environmental work and home gardens seeking low-care beauty.

How to Grow and Care for Apodasmia similis oioi

For best results, plant apodasmia similis oioi in full sun or partial shade. It grows well in wet and boggy sites but can also manage drier soils once established. Oioi has a clumping habit and typically forms dense stands up to 1.2 metres tall. Little maintenance is required — an occasional tidy-up of old stems in late winter keeps the plants looking at their best.

When combining with other grasses and natives, consider contrasting textures and colours for year-round interest. Pairing oioi with Lomandra Shara brings together strong foliage shapes and drought tolerance, ideal for contemporary gardens or low-mow spaces.

Apodasmia similis oioi in Design and Restoration

Oioi’s strong vertical lines and soft green-grey tones work beautifully in both naturalistic and formal planting schemes. You’ll often see apodasmia similis oioi used in wetland restoration, where it supports local biodiversity and habitat creation. In a home garden, group oioi in drifts along water features, or intermix with ornamental grasses like Hakonechloa macra 'Albostriata' for a lush, textural effect.

For native borders or ecological plantings, combining oioi with companions such as Restio tetraphyllus (Tassel Grass), Microlaena avenacea, and Carex Spark Plug increases resilience and visual variety while supporting native wildlife.

Order Apodasmia similis oioi

If you’re seeking a low-maintenance, hardy, and eco-friendly plant, apodasmia similis oioi is an exceptional choice for a range of landscape situations across New Zealand. Whether restoring wetlands, stabilising soil, or adding striking form to your garden, oioi brings both function and beauty. Browse our range of grasses and natives, and discover how apodasmia similis oioi fits into a thriving New Zealand garden.


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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.

Apodasmia similis (Oi Oi) and Aesculus hippocastanum are tried and true, but new favourites like Magnolia grandiflora Little Gem, Callistemon 'Genoa Glory' (Bottlebrush), and Azalea 'Kosmos' are just waiting to be discovered.
–The Plant Company

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