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Bottle Sedge
Carex rostrata
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Bottle Sedge is a tall wetland plant that often forms wide patches along lakeshores, rivers and bogs. Its flower heads show slim brown male parts above and thicker pale green female parts that develop many small, bottle‑shaped pods.
Did you know?
- The “bottle” name comes from the swollen, bottle‑like pod around each seed.
- Large stands can look bluish‑grey compared to the grasses around them.
About the species
Identification
20–100 cm tall, loosely tufted but spreading into broad patches by creeping underground stems. Upright stems feel three‑edged. Leaves flat or slightly channelled, 2–8 mm wide, grey‑ to blue‑green; bases brownish. Flower heads have several clusters: 2–4 slim brown ones at the top (male) and 2–4 thicker pale green ones below (female). Each female flower sits in a pale, swollen, bottle‑shaped pod that narrows to a long tip; clusters may be upright or drooping. Compared with Bladder Sedge, these pods narrow more sharply and have a longer tip. Flowers in Finland in June–July.
Plant group
Grasses, sedges and rushes
Habitat
mire
Flowering
Jun–Jul
About the habitat
Grows in shallow water and very wet ground: lake and river margins, stream edges, ditches, and open fens and bogs. Common throughout the country.
Sources
Photo: Wolfgang Moroder, CC BY-SA 3.0 https://commons.wikimedia.org/wiki/File:Carex rostrata iërba dl lech da Rijeda Mastlé.jpg
Text: Pinkka: BIO-503 Suomen kasvisto ja kasvillisuus - Sisävedet: humusjärvet, CC BY 4.0 https://laji.fi/taxon/MX.40341
Text: Pinkka (Luomus), CC BY 4.0 https://laji.fi/taxon/MX.40341
Text: Pinkka: A Pohjolan kasveja - Carex, CC BY 4.0 https://laji.fi/taxon/MX.40341
Text: Pinkka: Kasvien talvi - Talvivihreät luonnonkasvit, CC BY 4.0 https://laji.fi/taxon/MX.40341
Text: Wikipedia (Finnish), CC BY-SA 4.0 https://fi.wikipedia.org/wiki/Pullosara
