Annual or perennial herbs or shrubs, glabrous or pubescent, generally with strong odor; Stems thin or robust, leafy, often very branched. Leaves opposite at the bottom, opposite or alternating at the top, simple and entire to pinnatidivididas or composite, whole margins to sawed, variously dotted-glandular.
In the garden of plants in full sun. They may have some shade and even things right, if these are the hours of greatest sunshine. If it is not a shadow for a long time, the plant grows excessively, its flowering is greatly reduced, as well as the intensity of the color of its colors.