The plant grows 2 feet tall and spreads about a foot. The purple-blue flowers are about an inch inch long and are carried in long, narrow spikes. All parts of the plant give off a strong aroma. Cultivation Propagation is from seeds or by cuttings and root division. Sow seeds in spring in a light, dry warm soil.
Full sun is preferred, and germination is very rapid.
It will do well in a windowbox or other container and makes an attractive border or edging. Stems should be cut back after flowering, and the plant should be cut off at ground level in the fall. Culinary Uses Leaves have a slightly bitter, minty taste. They should be used sparingly in salad. A few leaves can be used in savory dishes such as rich stews and in marinades.