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 ...

Butterflies and bees like native thistle flowers. I’ve written about thistles before, but I feel I can say (and show) a little bit more about why our native thistles are important for wildlife, ...

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.

I declare this the Year of the Thistle. This September, the country will have the opportunity to grasp it and set us off in an exciting new direction, so Scots gardeners should celebrate this by ...

This study documented two behavioural responses to pollen and nectar deprivation in a colony of bumble bees: flower handling and choice. In two laboratory experiments, colonies were deprived, on ...

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 ...

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 ...

Want to know a secret? I love thistles. Despite being prickly weeds, they are beautiful. That must be why their sculpted leaves and elegant flowers often appear in art and design. Luckily, some ...

Bull thistle with spikes and pinkish-purple flower - weha/Shutterstock Thistles have a strange beauty, and the native species of these tough, purple-flowered plants feed pollinators and other forms of ...

A flower species depicted on the NT$1,000 banknote that is commonly believed to be a Yushan thistle is actually a newly discovered species of Cirsium, academics said on Saturday. Chang Chih-yi (張之毅), ...

Globe thistle’s pale purple to steel blue flowers, held high on stiff stems above coarse dark green foliage, are stealing the show this summer in gardens where they grow. Sea holly is a close second ...