There are numerous marigold varieties available to home gardeners. Many of the commonly grown marigolds are varieties of African and French marigolds. Less known are the triploid hybrids and the signet marigolds. Flowers may measure up to 5 inches across. Plant height varies from 10 to 36 inches.
African marigolds are excellent bedding plants.
Tall varieties can be used as background plantings. Suggested African marigolds for Iowa include varieties in the Inca and Perfection series. African marigolds are also referred to as American marigolds. Flower colors are yellow, orange, and mahogany-red. Many varieties have bicolored flowers.