Sow thistles look like scraggly dandelions with spiny leaves. Vicky McMillan Provided Sow thistles look rather like scraggly dandelions with prickly leaves. They’re neither dandelions nor thistles, ...

This-le, noun, widely distributed herbaceous plant of the daisy family, typically has prickly stems and leaves and rounded heads of purple flowers. There are more than 62 varieties of native thistles ...

Thistles have reputations as especially prickly plants, and species found in Northcentral Texas and Southwestern Oklahoma are not exceptions. Some cultures and traditions have low regard for thistles.

There’s some interesting activity afoot in the cropfields and pastures of Colorado, Utah and Montana, as researchers explore a new biocontrol method for Canada thistle, by delicately sprinkling, ...

Most thistles go unnoticed until they bolt (put up a flowering stalk). When thistles bolt and begin to flower each spring, folks who want to control them call the Noble Foundation. By the time they ...