Protect your garden and lawn by attacking invasive thistle. These weeds thrive in hot summer weather, so it is essential to ...

When the flowers are still young, they are a small sphere of deep blue and silvery white spikes. The spikes later bloom into a ball of tiny, star-shaped flowers that attract all kinds of pollinators.

In hot Spanish summers, the thistle Carlina corymbosa is somehow able to cool itself substantially below air temperature.

Many thistle plants look alike. But don’t worry — we’ve compiled some tips and tricks for identifying some of these amazing thistle plants!

American basketflower, a native member of the “thistle tribe,” is often mistaken for and consequently chemically treated as an invasive thistle. While the heads of basketflower are similarly colored ...

Musk thistle flowers throughout the summer. It is the widest spread statewide. It can grow 7 feet tall, with brilliant purple 3-inch-wide, pom-pom-like blooms.

Italian thistle (Carduus pycnocephalus) is probably the most common. It is a slender plant with sparse foliage, up to 6 ft tall on fertile soils. Its stems have spiny wings and its flowers are small ...

Browse 10+ clip art of milk thistle stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Thistle flower graphic ...

Browse 10+ clip art of a thistle tattoo designs stock illustrations and vector graphics available royalty-free, or start a new search to explore more great stock images and vector art. Continuous ...