Hibiscus is a genus of flowering plants in the mallow family that has a high antioxidant content and may offer a number of benefits. It supports weight loss, lowers blood pressure, and stops the growth of bacteria and cancer cells, among other things. The flowers range in size from 4 to 18 cm in diameter, are prominent, trumpet-shaped, and have five or more petals in a variety of colors, including white, pink, red, blue, orange, peach, yellow, and purple.