CLEVELAND, Ohio -- As summer starts turning to fall in Northeast Ohio, weeds are sometimes the most attention-getting plants in the garden. Mild-mannered and time-strapped gardeners, like yours truly, ...

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.

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. It ...

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, ...

Turkish thistle (Carduus cinereus) is an annual forb that grows up to 4 feet tall in the right conditions. Native to Europe and the Mediterranean region, it was first documented in North America in ...

You might think I have a fixation for bright, yellow-flowering, invasive plants, as this week’s topic is sow thistle. Actually, there are three versions: common sow ...

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 ...