Among garden weeds, the Canada Thistle (cirsium arvense) is a common perennial weed and what I call a “super weed.” It has a dual system of reproduction, by roots and flowers that produce seeds. Thus, ...

Canada thistle (Cirsium arvense) is an aggressive, creeping perennial weed that infests crops, pastures, rangeland, roadsides and noncrop areas. Generally, infestations start on disturbed ground, ...

Canada thistle was probably introduced to America around 1750 and the state of Vermont enacted noxious weed legislation against it in 1795. It was proclaimed a noxious weed in Nebraska in 1873.

Canada thistle (Cirsium arvense) is probably near the top of the list for just about any gardener and farmers too for that matter. It is a tough perennial broadleaf weed that is easily established in ...

Contrary to its name, Canada thistle was actually introduced from Eurasia. Its highly aggressive manner crowds out native species and is difficult to control. This plant is targeted by Eagle County’s ...

Canada thistle may look beautiful and innocent with its bright yellow and purple flowers towering above North Dakota's crops and prairie grasses, but looks may be deceiving. The plant is an invasive ...

What can I do about Canada thistle? It's growing in my perennial beds, and I can see that it's spreading to other areas. It's hard to imagine a weed worse than Canada thistle: It spreads by tenacious ...

Canada thistle (Cirsium arvense) is an invasive weed reaching 2 to 5 feet in height that is difficult to eradicate because it is a rhizomatous perennial, in addition to being a prolific seed producer.

There’s some interesting activity afoot in the cropfields and pastures of Colorado, Utah and Montana, as researchers explore a new biocontrol method for Canada thistle, by delicately sprinkling, ...

Editor’s note: In July, Home & Garden featured a number of questions and answers about common summer problems —earwigs to ash galls — and invited readers to send in more questions. Here’s another in ...

SUMMIT COUNTY – Five hundred weed-eating goats will descend on the county’s Canada thistle sometime between today and Tuesday, according to employees of the local weed control program. The goats are ...

Canada thistle has surpassed leafy spurge as North Dakota's peskiest weed, state agriculture officials say. "Slightly more than 1 million acres are infested with Canada thistle, according to reports ...