This half-hardy perennial has rooting stems, aromatic hairy leaves, and white to mauve flowers producing knotlike seed clusters. The leaves have a sweet and spicy smell and flavor. Uses: Sweet Marjoram leaves have a sweeter, spicier taste than the leaves of Oregano. Popular culinary herb used in salads, sauces, roast meats, fish, cheese, and in liqueurs. The leaves are enjoyed in scented sachets and sweet waters. Habitat: Dry, well-drained alkaline soils, sun.