All three have flowers very similar to dandelions, so you might think they are just dandies with long, long stems. Like ...

The flowers of the thistle Carlina corymbosa are, on average, about 3 degrees Celsius cooler than the surrounding air, ecologist Carlos Herrera reports February 13 in Ecology.

The purple flower heads may look pretty, but don't let that fool you. Milk thistle (Silybum marianum) can be a pain if it's growing in your yard. It's non-native and can be an invasive plant, as ...

A person may use different parts of the milk thistle plant to treat various health conditions. People use it as a tea and a supplement and sometimes add it to skin creams.

The plant also affected native vegetation and wildlife, preventing them from thriving in infested areas. Russian thistle can spread prolifically and while it has its own very effective natural methods ...

Musk thistle flowers in May and June in the eastern part of the state. This time of year musk thistle is usually dried up and has fallen over, Meyer said. Tall thistle is generally no taller than ...

Thistle, especially Canada ... We recently moved to a new home and have inherited flower beds which are inundated with thistle. ... Needles of any age and on any part of the tree may be infected, ...