Onopordum acanthium, commonly known as the cotton thistle, is a biennial plant native to Europe and parts of Asia. It features large, spiny leaves and can grow up to 2 meters tall. The plant produces striking purple flowers that bloom in summer, attracting various pollinators. This species thrives in disturbed areas, such as roadsides and fields, and is often considered a weed in some regions. Onopordum acanthium has a deep taproot, which helps it access water and nutrients, making it resilient in dry conditions. Its spiny structure deters herbivores, aiding its survival.