Thistles weeds can be particularly difficult to remove, thanks to their fine spikes that will lodge themselves in your skin, ...

Canada thistle (Cirsium arvense) is a creeping perennial broadleaf that is native to the Mediterranean area. It spreads rapidly through underground stems called rhizomes and by producing seeds.

Canada thistle is a colony-forming perennial from deep and extensive horizontal roots. Stems are 1 to 4 feet tall, ridged, branching above. Leaves are alternate, lacking petioles, oblong or ...

The Yakima County Noxious Weed Board has been helping landowners control problem and noxious weeds since 1975. Contact them at 509-574-2180, email [email protected] or visit ...

Canada thistle, a terrestrial herbaceous perennial in the Asteraceae family, is an open-land invasive that prefers disturbed upland areas as well as wet areas with water fluctuations. Canada thistle ...

According to the Xerces Society, North America is home to 62 different thistle species; however, not all of these are ...

European marsh thistle is distinguished from Canada thistle by having spines that cover the stem, leaves, and flowers. For more information visit Midwest Invasive Species Information Network (MISIN).