Scotch thistle (Onopordum acanthium) is a biennial native to Eurasia. It was introduced into the U.S. as an ornamental and as a contaminate in feed. It invades rangeland, pastures, cultivated fields ...

If life were a comic book, they’d be considered the super villains. Once introduced to an area, they become bent on world domination. They are oblivious to boundaries of land ownership, political ...

This has been a phenomenal year for germination of noxious weeds. Scotch thistle, for instance. Scotch thistle grows up to 13 feet tall. Cutting the root 2 inches below ground will kill that root and ...