The French Marigold (Tagetes patula) is a species of annual flowering plant in the daisy family (Asteraceae). It's grown as ornamental plant. It's a low growing plant, which reaches a height of 20 inches. The flower is usually red with yellow color margin and splashes. French marigold is a companion plant of tomato and some other vegetables, which repel whiteflies, pests of economic importance. They produce a pesticidal chemical from their roots, which kill nematodes in the soil. This chemical lasts several years after the plants are gone. French marigolds together with other species of marigolds are grown commercially for its flowers. The flowers are used in wedding ceremonies, garlands, decoration and various traditional and religious rituals.
French Marigold-Tagetes patula