Jointed Wire Rush

(Apodasmia similis)

Jointed Wire Rush (Apodasmia similis)

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Estimated Native Range
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Summary

Apodasmia similis, commonly known as Jointed Wire Rush, is an evergreen perennial grass native to the coastal wetlands, estuaries, and salt marshes of New Zealand, including the Chatham Islands. It typically grows to a height of 5 feet (1.5 meters) and a width of 3 feet (0.9 meters), featuring upright, slender, and dark green stems that give it a wiry appearance. The plant’s form is tufted, and its stems are segmented, resembling bamboo. Although it does not produce conspicuous flowers, its architectural form and texture are valued in garden design.

Jointed Wire Rush is appreciated for its low maintenance requirements and its ability to tolerate wet conditions, making it an excellent choice for water features, bog gardens, and coastal plantings. It thrives in full sun but can also tolerate part shade. The plant prefers consistently moist soils but is adaptable to various drainage conditions. It is often used to stabilize soil in erosion-prone areas. While generally disease-free, it can occasionally suffer from rust if conditions are too dry. It is not known for being invasive and is considered a valuable addition to environmentally sensitive landscaping.CC BY-SA 4.0

Plant Description

  • Plant Type: Grass
  • Height: 2-3 feet
  • Width: 1.5-3 feet
  • Growth Rate: Moderate
  • Flower Color: N/A
  • Flowering Season: Spring, Summer
  • Leaf Retention: Evergreen

Growth Requirements

  • Sun: Full Sun
  • Water: Medium
  • Drainage: Slow, Medium, Fast

Common Uses

Erosion Control, Low Maintenance, Potted Plant, Water Garden

Natural Habitat

Coastal wetlands, estuaries, and salt marshes of New Zealand, including the Chatham Islands

Other Names

Common Names: Oioi

Scientific Names: , Apodasmia similis, Leptocarpus similis, Leptocarpus simplex var. fasciculatus,

GBIF Accepted Name: Apodasmia similis (Edgar) B.G.Briggs & L.A.S.Johnson