Alberta, Canada
Go back to alphabetical index

Creeping Thistle
Cirsium arvense
<< >>

Also known as - Canada Thistle, Field Thistle.

Not native to Alberta. Perennial. Noxious weed.

General Description

By Gustave J. Yaki

Introduced from France in spite of its common name, Canada Thistle. Abundant. Noxious weed. Stems, creeping underground, forming colonies, erect, smooth, very leafy, 5-10cm high. Leaves, alternate; stalkless, spiny-tipped, pinnately lobed; sometimes hairy below. Flowerheads, many, borne in small clusters from leaf axils; dull purplish lilac or whitish disc florets, less than 2.5cm high; with purplish bracts; June-Sept. Fruit, showy clusters of white pappus, extending above the seeds; individual plants may produce over 40,000 seeds, viable in soil for 20 years. Habitat: fields, roadside, disturbed areas. sWeas.N50.59.413/W114.09.222.

Talk about Creeping Thistle on our moderated message board. Get answers and share images. We are Alberta's largest and friendliest online community of nature enthusiasts. Beginners and experts are welcome. We are non-profit, non-commercial, ad free and spam free.

Where to find Creeping Thistle in Alberta   

There is currently no information regarding this species in our Where & When database.

Interesting Facts about Creeping Thistle   

No interesting facts regarding Creeping Thistle have been submitted to the database yet.

Creeping Thistle Stories from our Readers   

No stories regarding Creeping Thistle have been submitted to the database yet.

Recent Creeping Thistle Reports in Alberta


Abundance Location Reporter Date
Present Waskasoo Creek (West of 49 Ave) Blake 2010/07/22
Present Red Deer County Blake 2010/06/11
Present Maskepetoon Blake 2010/06/06
Present County of Wetaskiwin No. 10 Blake 2009/07/30
Present Caroline Natural Area Blake 2009/07/25

Creeping Thistle Hotspots in Alberta

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''' at line 1