Thistles weeds can be particularly difficult to remove, thanks to their fine spikes that will lodge themselves in your skin, ...

Musk thistle usually begins flowering in May and may bloom from seven to nine weeks. Seed dispersal begins seven to ten days ...

The Sacramento Mountains thistle is a rare purple flower than can grow to be six feet tall and lives only in wet, high-elevation habitats in the Sacramento Mountains near the town of Cloudcroft, New ...

As sow thistle can grow up to 1 m tall, it can be quite a competitive weed ... The lobes in each leaf of prickly sow thistle do not tend to cut in so close to the midrib of the plant as in sow thistle ...