A succulent perennial shrub-let with stems that become woody with age. Size tends to be about 18 to 24 inches in cultivation but can reach over three feet in the wild. Leaves are succulent with a coating of short hairs. Leaves and flowers are aromatic. Native to East Africa and the Arabian Peninsula area, growing in dry, Acacia scrub and rocky soils.
Widely used as a medicinal plant for throat and stomach ailments. The root is edible when cooked. The plant is a source of thymol. Flowers are purple and somewhat decorative. Cultivation is easy and propagation is by seed or stem cuttings.