Leaves: petioles 1–10(–30) mm; blades 10–40(–120) × 5–20(–60) mm, often 3-lobed. Cypselae 2–2.5 mm; pappi 4–5(–7.5) mm. 2n = 36.

Flowering Jan–Dec. Disturbed sites; 0–10 m; introduced; Fla., Tex.; Mexico.

Tridax procumbens is listed as a noxious weed for United States and is listed as a pest or noxious weed for nine or more states.