Bull thistle is easy to mix up with similar-looking, native thistle species. But unlike native thistles, bull thistle should ...

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.

It can be hard to see a thistle as anything other than a painful weed, and they are all being topped right now by farmers as part of the constant attempt to eradicate them from fields. The gardener ...

Non-native, invasive thistles are rapidly expanding across Routt County and Northwest Colorado. These aggressive plants ...

SALT LAKE CITY — As summer heats up, the sight of blooming thistles may give male goldfinches a testosterone kick. Thistle flowers could signal to American goldfinches that the seeds the songbirds ...