Marigold (Tagetes erecta L) is an annual herbaceous herb of compositae, with erect stems, stout, longitudinal thin ribs and branches spreading upward. Ye Yu, with a few glands along the leaf margin. Head solitary; total bracts cupular, Apex dentate, ligulate yellow or dark orange, tube flowers corolla yellow. Achenes linear, base narrowed, black or brown, short puberulent; Crown hairs with 1-2 long awn and 2-3 short and obtuse scales. Flowering period 7-9 months.
Originating in Mexico. All over China are distributed. Can grow at an altitude of 1150 meters to 1480 meters in the area, more than in the roadside meadow. Marigold often in the spring sowing, because of its large flowers, flowering long, it is often used in flower bed scenery.