Onopordum acanthium (Cotton Thistle) is a species of biennial herb in the family Asteraceae. They have a self-supporting growth form. They are associated with freshwater habitat. They are native to Germany, Azerbaijan, Iran, Switzerland, Georgia, Turkmenistan, Pakistan, Russia, Portugal, Italy, Yugoslavia, Spain, Tajikistan, Albania, Afghanistan, Romania, Ukraine, Greece, Bulgaria, Kazakhstan, Turkey, Czech Republic, Moldova, Kyrgyzstan, France, Armenia, Austria, Hungary, and Iraq. They have simple, broad leaves and achenes. Individuals can grow to 1 m.
EOL has data for 18 attributes, including: