Edgar’s Rush

(Juncus edgariae)

Edgar’s Rush (Juncus edgariae)

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Estimated Native Range
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Summary

Juncus edgariae, commonly known as Edgar’s Rush, is an evergreen perennial herb, native to a variety of habitats including grasslands, wetlands, and along forest margins in New Zealand and the Chatham Islands. It typically grows to a height and width of 2-3 feet (0.6-0.9 meters), forming dense clumps of dark green, cylindrical stems. The plant’s inconspicuous brown flowers appear in spring and summer, clustered along the upper part of the stems. Edgar’s Rush is not particularly known for its flowers, but rather for its architectural foliage and ability to thrive in wet conditions.

Edgar’s Rush is valued for its ability to stabilize soil and for its use in water gardens, rain gardens, and other areas with high moisture. It is also used in ornamental plantings for its textural contrast. This rush is tolerant of a range of soil types, provided they are consistently moist or even waterlogged. It prefers full sun but can tolerate partial shade. While it is low-maintenance, it can spread aggressively if conditions are ideal, so care should be taken to manage its growth in smaller gardens.CC BY-SA 4.0

Plant Description

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

Growth Requirements

  • Sun: Full Sun
  • Water: High
  • Drainage: Slow, Standing

Common Uses

Bird Garden, Deer Resistant, Low Maintenance, Street Planting

Natural Habitat

Native to grasslands, wetlands, and forest margins in New Zealand and the Chatham Islands

Other Names

Common Names: Wiwi

Scientific Names: , Juncus edgariae,

GBIF Accepted Name: Juncus edgariae L.A.S.Johnson & K.L.Wilson