Tagetes erecta (aka Mexican marigold, Aztec marigold, or cempasuchil) is native to Mexico, where it is found in the wild in the states of México, Michoacán, Puebla, and Veracruz. The Aztecs gathered the wild plant as well as cultivating it for medicinal, ceremonial and decorative purposes. The flowers are traditionally placed on ofrendas/altars in honor of el Día de los Muertos, and they are also very popular in Hindu weddings because they represent the sun, symbolizing brightness and positive energy. 

Aztec Marigold (Cempasuchil)