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, ...

Due to the wet springs we’ve had, common mullein and Canada thistle have been especially prolific the last several years. With seed-heads and flowers on the plants now, both weeds are at their most ...

Farmers who don't rely on or want to minimize the use of chemical herbicides need creative solutions to win the battle against aggressive perennial weeds. In ongoing research at the University of ...

Add Yahoo as a preferred source to see more of our stories on Google. Each Canada thistle plant can produce 1,500 seeds in a single season. Q: We recently moved to a new home and have inherited flower ...

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 ...

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 ...

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 ...