Onopordum, also known as cotton thistle or Scotch thistle, belongs to the family Asteraceae. This plant has several synonyms, depending on the region and language. In Spanish, Onopordum is called cardo, while in French, it is known as chardon. The English language has several synonyms for this plant, such as woolly thistle, giant cotton thistle, or bull thistle. The genus Onopordum contains around 40 species, and their appearance can vary depending on the species. However, most of them are known for their large and coarse leaves with sharp thorns. Due to their size and distinctive appearance, Onopordum species are often used in landscaping or as ornamental plants.