Protect your garden and lawn by attacking invasive thistle. These weeds thrive in hot summer weather, so it is essential to ...

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, ...

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 ...

In mid September I was walking on the CU campus when I noticed a teeming population of weevils on a small cluster of Canada thistles. Almost half of them were amplectic. Several hours later, when I ...

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 ...

This prickly plant has been coming up more and more in our junipers. We keep pulling it out, but it’s like whack-a-mole. What can we do to clean it out of the entire bed? Canada thistle, like many ...

Add Yahoo as a preferred source to see more of our stories on Google. Canada thistle is an invasive plant with a deep, extensive root system that requires persistence to completely remove from your ...

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 ...

Christine Ortmann and her neighbors in rural Gilberts received a helping hand in their endless battle with Canada thistle. “I spoke with Ben (Haberthur, Forest Preserve District of Kane County ...

Canada thistle is not Canada’s friend. Nor is it Canadian. Originally from Europe and Asia, Canada thistle crossed the ocean in the 1600s and quickly spread to most parts of North America. In Ontario, ...