- Marigold is also known by the names Pot Marigold, Mary Bud, Calendula, Mary Gowles, Holigold, and Golds. Marigold grows as a common garden plant throughout North America and Europe. The golden-orange or yellow flowers of Marigold have been used for centuries. The part of this plant used are the flowers. - Marigold flowers were believed to be useful in reducing inflammation, wound repairing, and as an cleansing. Historically, Marigold was used to help support various skin problems, ranging from s