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Convolvulus sepium

Convolvulus sepium

Convolvulus sepium

Identify the Convolvulus sepium from a photo and log your finds with Florapass.

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How common: Very common

Invasive alien species

Convolvulus sepium is a vigorous, twining perennial vine with showy white, trumpet-shaped flowers. It climbs over shrubs, fences and tall grasses in moist, rich places and along shores and waterways. The long stems wrap around supports and can reach a few metres.

Did you know?

  • Just below each flower sit two big leaf‑like pieces that wrap around the base – a key clue for this species.
  • It can smother nearby plants by climbing over them with stems several metres long.

About the species

Identification

A twisting climber up to about 3 m long. Stems smooth and hairless, winding around other plants. Leaves on long stalks, broadly heart‑shaped with a sharp tip; the base has a narrow V‑shaped notch that creates two pointed corners. Flowers are single where a leaf joins the stem: large, white, trumpet‑shaped, about 3–6 cm, opening in sunshine. Just under the flower are two large leaf‑like pieces that almost enclose the base. Dry round seed case follows. Compared with field bindweed, the flowers are much larger and the two pieces under the flower are big and wrap the base. Flowers in Finland in July–August.

Plant group

Herbaceous plants

Habitat

shore

Flowering

Jul–Aug

About the habitat

Moist, nutrient‑rich places: sea and lake shores, riverbanks, ditches, damp meadows, wet woods and thickets, as well as roadsides, gardens and waste ground. Established; fairly rare, occurring south of Oulu.

Sources

Photo: Dominicus Johannes Bergsma., CC BY-SA 4.0 https://commons.wikimedia.org/wiki/File:Bloem van een haagwinde (Calystegia sepium). 29-07-2026 (d.j.b.).jpg

Text: Pinkka: Pieni maatalouslajintuntemus - Puuvartiset, CC BY 4.0 https://laji.fi/taxon/MX.39371

Text: Pinkka: Viheralueiden kasvit - Perennat ja ryhmäkasvit: 2-sirkkaiset, CC BY 4.0 https://laji.fi/taxon/MX.39371

Text: Pinkka: Ålandsexkursion, CC BY 4.0 https://laji.fi/taxon/MX.39371

Text: Pinkka: Maatalouslajintuntemus - Adoxaceae, Polemoniaceae, Convolvulaceae, Boraginaceae, Lamiaceae, Solanaceae, Plantaginaceae ja Campanulaceae, CC BY 4.0 https://laji.fi/taxon/MX.39371

Text: Pinkka: A Pohjolan kasveja - Carlina-Chrysosplenium, CC BY 4.0 https://laji.fi/taxon/MX.39371

Text: FinBIF species descriptions, CC BY 4.0 https://laji.fi/taxon/MX.39371

Text: Wikipedia (Finnish), CC BY-SA 4.0 https://fi.wikipedia.org/wiki/Karhunk%C3%B6ynn%C3%B6sryhm%C3%A4

See also