Sonchus arvensis, commonly known as field sowthistle, perennial sow‑thistle, corn sow thistle, dindle, gutweed, swine thistle, and tree sow thistle, is a plant in the family Asteraceae, native to Eurasia, where it is widespread across much of the continent. The species has also become naturalized in many other regions. The genus name Sonchus comes from the Ancient Greek sonchos, a term for a kind of wild lettuce; the specific epithet arvensis means “of the field” in Latin, reflecting the plant’s typical habitat.