It is a perennialherbaceous plant growing to 1-1.5 m tall. The distinctive feature of these plants is the compound leaves consisting of 3 leaflets, unusual in the Lamiaceae, which usually have simple leaves. The leafy stems terminate in dense, short spikes of flowers with tubular 2-lipped white or pink flowers.
The genus name is a diminutive of Cedrus, though the only connection between this herb and the large conifers of Cedrus is a vaguely similar resinous scent of the foliage.
Grown outdoors in mild climates, these perennials need protection in a sunny position in the herb garden and moist, well-drained soil. In cool climates they can be grown in a sunny conservatory. Water freely in the growing season. Propagate from seed or from cuttings.