The genus Marrubium encompasses about 40 species of perennials from the Mediterranean region and Asia. They have the square stems of other plants in this family and wooly or hairy, sometimes malodorous leaves. During the summer, tubular 2-lipped flowers bloom in whorls along the stems. Some species are used medicinally. Grow in a mixed border or large rock garden.
Noteworthy CharacteristicsThe wooly leaves often have an unpleasant smell. Some species are used as food sources by butterfly larvae.
CarePlant in a sheltered spot in poor, well-drained soil and full sun. Marrubium will not tolerate excessive winter moisture.
PropagationTake softwood cuttings in spring or summer, or start seeds in a cold frame in late spring. Germination is often erratic.