Flower NameCirsium arvense
Formal NameCirsium arvense
Alias西洋刺薊, Canada thistle, Creeping thistle, 西洋棘アザミ
Morphperennial wild grass
Cirsium arvense or creeping thistle(Cirsium arvense) is a perennial wild grass of the family Asteraceae naturalized from Europe. It has high reproductive ability, and it populates in the roadside, meadow, and wasteland. It is a dioecious strain, the upright hairless stem often branches. From summer to autumn, a large number of light brown head flowers will bloom with inflorescences on the tip of the stem. It is considered to be harmful weed because animals do not eat because there are sharp thorns in the leaves.
Name: Cirsium arvense, aka: Canada thistle, Creeping thistle, Place of Origin: Europe, Environment: roadside, Pastures, wastelands, plant height: 30 to 150 cm, leaves: alternate, leaf margin: shallow, inflorescence form: single apical flower, flower shape: head flower, flower color: light crimson, flower diameter: 1 to 2.2 cm, flowering period : July - September, dioecious strain, breeding method: species, rhizomes.
Flower typeActinomorphic Flower
Flower arraySolitary Inflorescence
Petal shapecapitate corolla
SeasonJul Aug Sep
Height30 ~ 150 [cm]
Diameter1 ~ 2.2