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PERENNIAL SOW-THISTLE [1 record]

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Record 1 2016-10-12

English

Subject field(s)
  • Weed Science
  • Botany
Universal entry(ies)
Sonchus arvensis
Latin
DEF

A vigorous deep-rooted perennial herb introduced from Eurasia that reproduces by seed, by thick vertical roots and by cylindral horizontal roots 0.25-0.5 cm in diameter.

CONT

Perennial sow thistle grows on a single stem, branching near the top. The branches end in large, loose, clusters of yellow, dandelion-like flowers. Leaves vary in shape and have weak prickles on the edges. Upper leaves clasp the stem directly. Mature plants contain a bitter milky juice and grow to 1.5 m tall. Annual sow thistle has smaller flowers. [It] is an aggressive, creeping weed that can severely reduce yields in cultivated fields.

OBS

[Can be found] in cultivated fields, pastures, meadows, woodland, waste places, roadsides, gardens, and occasionally in lawns.

OBS

perenniel sow-thistle: preferred common name in the Inventory of Canadian Agriculture Weeds (2003).

French

Domaine(s)
  • Mauvaises herbes
  • Botanique
Entrée(s) universelle(s)
Sonchus arvensis
Latin
DEF

Plante vivace se propageant par rhizome, et dont les tiges mesurent de 0,35 à 1,5 m de hauteur [...]

OBS

Elle se rencontre dans toutes les provinces [canadiennes] où elle pousse dans les champs de céréales, les cultures sarclées, les terrains incultes et en bordure des routes [...]

OBS

[Le] laiteron des champs est l'une de nos mauvaises herbes les plus agressives, surtout dans les champs de grain.

OBS

laiteron des champs : nom à privilégier selon l'Inventaire des mauvaises herbes du Canada (2003).

Spanish

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