Milk thistle (Silybum marianum ... explains Amy Enfield of ScottsMiracle-Gro. 'The plant is large – up to six feet tall,' she says. 'It blooms from late spring to early summer with a single ...

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 ...

The shape of the flower head tends to differ as well, and the leaves of young sow thistle plants tend to have a large terminal lobe, unlike hawksbeard. As with the prickly sow thistle and hawksbeard, ...

The species gets the name "nodding thistle" because of the large seed heads that "nod" over due to their ... Nodding thistle is often listed as a Pest Plant by Regional Councils in areas where nodding ...