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Saltmarsh Rush

Saltmarsh Rush

Juncus gerardi

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How common: Common

Saltmarsh Rush is a low, perennial rush of sea shores. It thrives where salty spray or tides make the ground salty, often forming bands on shore meadows. Its stems are upright, about 20–50 cm tall, with loose clusters of dark brown flowers.

Did you know?

  • Exceptionally salt‑tolerant for a rush; it often marks the salty zone of a shore.
  • The tiny dark brown flowers are wind‑pollinated.

About the species

Identification

Low, grass-like perennial, 20–50 cm. Stems green, mostly round but can feel three‑edged. Leaves mainly at the base, 4–5 short, narrow and fairly flat; few or no leaves up the stem. Flower cluster loose and open (2–10 cm) with many small, almost upright, mostly single flowers. Each flower has six equal, dark brown pieces; the small green leaf just below the cluster is usually shorter than it. Fruits are tiny dark brown seed cases about as long as the flower parts. Its salty shore sites help tell it from similar rushes. Flowers in mid‑summer (June–July).

Plant group

Grasses, sedges and rushes

Habitat

shore

Flowering

Jun–Jul

About the habitat

Sea shore meadows and saltmarshes, especially places only occasionally flooded but kept salty by sea spray or high tides. Common along the Baltic coast; rare inland. In the north it also occurs along roadsides and railway verges.

Sources

Photo: Clément Maouche, CC BY 4.0 https://www.gbif.org/occurrence/6320779962

Text: Pinkka: BIO-503 Suomen kasvisto ja kasvillisuus - Itämeri: rantaniityt, CC BY 4.0 https://laji.fi/taxon/MX.40207

Text: Wikipedia (Finnish), CC BY-SA 4.0 https://fi.wikipedia.org/wiki/Suolavihvil%C3%A4

See also