Oaxaca, Mexico: Cochineal is a parasite which grows on nopal paddles. When crushed, it is used to make the first red dye, used by Van Gogh and other European artists as well as to die textiles. The Jardin Ethno-Botanico in Oaxaca, Oaxaca, has plants from the state that are indigenous. Many are medicinal, edible, or useful and significant culturally. (Photo: Ann Summa).
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