Marigold is a genus of about 50 species of annuals and perennials. Marigold flowers are made up of multiple layers of overlapping petals with the petals getting smaller and more condensed towards the center of the flowers, similar to that of a carnation. The blooms may be single or double colored and can be varying hues of yellow, orange, red, and, maroon. Marigolds are easygoing plants that bloom reliably, even in direct sunlight, punishing heat, and, poor to average soil. These species range in size from 15 to 80 cm (6 inches to 3 ft) tall, rarely until 2 meters (7 ft). marigold grows in almost any soil but will perform best in moderately fertile, well-drained soil.