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 ...

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 ...

Winter greetings from the Yakima County Noxious Weed Board! Winter is the time to start thinking about our plans for our gardens and fields in the coming year. Now is the time to look for, and if you ...