Canada thistle


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Canada thistle

n.
A perennial herb (Cirsium arvense) in the composite family, native to Europe and naturalized as a noxious weed in North America, having spiny-margined leaves and rose-purple or sometimes white flower heads.

Canada thistle

n
(Plants) the US and Canadian name for creeping thistle

Can′ada this′tle


n.
an Old World prickly composite plant, Cirsiumarvense, having small purple or white flower heads, now a troublesome weed in North America.
[1790–1800, Amer.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Canada thistle - European thistle naturalized in United States and Canada where it is a pernicious weedCanada thistle - European thistle naturalized in United States and Canada where it is a pernicious weed
plume thistle, plumed thistle - any of numerous biennial to perennial herbs with handsome purple or yellow or occasionally white flower heads
References in periodicals archive ?
Carmen Fernholz has been growing hay organically for more than 40 years, and he says it pays off in three ways: He has a strong market of organic dairy producers, it builds soil for his crop rotation, and it controls Canada thistle.
Their job was to chow down on Canada thistle, leafy spurge, common tansy, common burdock, yellow toadflax and dandelions, while under the watch of a skilled shepherd and several herding horses and dogs.
Come spring, I prepared the trenches, planted the roots and then, along with the emerging asparagus, came the brome grass, Canada thistle, and a million varieties of annual weeds.
Avoid tilling overly aggressive or invasive plants that produce rootbuds, such as crabgrass, johnsongrass, bindweed or Canada thistle.
FATHERY SEEDS OF CANADA thistle shimmered in the sunlight, looking like Swatches of silvery shag carpet strewn randomly across the Alberta prairie.
Asked what her sales pitch might be to groups considering signing up for a twice-a-year stint pulling up gorse, Canada thistle, Scotch broom and other noxious weeds, Morrison paused and chuckled.
thistle, holy thistle, Syrian thistle, golden thistle, Canada thistle,
Ziska has also collaborated on work showing that cheatgrass and Canada thistle flourish when C[O.
Canada thistle, bermuda grass, leafy spurge, dandelion, and Johnsongrass can spread asexually and can regenerate from perennial structures (Figures 14-5 and 14-6).
Renecker and Hudson (1992) reported moose consuming small amounts of (presumably dead) Canada thistle (Circium canadensis) in Jan.
Weeds such as quackgrass and Canada thistle will grow through several inches of mulch and generally need to be removed by hand.
5:20 Brent Pringle (UND): USING HIGH SPATIAL RESOLUTION SATELLITE IMAGERY TO MAP LEAFY SPURGE (EUPHORBIA ESULA) AND CANADA THISTLE (CIRSIUM ARVENSE) IN THE NORTH UNIT OF THEODORE ROOSEVELT NATIONAL PARK

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