Onopordum tauricum, the Taurian thistle or bull cottonthistle, is a species of thistle. It is native to Eurasia and is known in the western United States as an introduced species. It easily becomes a noxious weed, similar to its relative, Onopordum acanthium.
This is a biennial herb producing a sticky, glandular, very spiny stem up to 2 meters tall. The spiny, bright light green leaves are up to 25 centimeters long and are divided into triangular lobes. The inflorescence is made up of several large ...