Agastache, synonym Brittonastrum is a genus of about 30 species of aromatic perennials in the Lamiaceae family. They are predominately found in dry hilly areas of the U.S., Mexico, Japan, and China.

Some of the more common species within this genera are: A. aurantiaca, A. barberi, A. cana, A. foeniculum, A. mexicana, A. rugosa, A. scrophulariifolia, and A. urticifolia.

These species are suitable for use in herb gardens or in a mixed border. Due to their aromatic nature they are highly attractive to insects. To cultivate these species, grow them in a well drained fertile soil in full sun. In warm climates the less hardy varieties may need to be overwintered in a sheltered area.

Propagation of these species includes sowing seed at 55-64F. (13-18C.) In early spring, division in spring, or semi-ripe cuttings in late summer except for A. mexicana which should have cuttings taken in early summer.

Among their chief diseases and pests are mildew and rust in the summer months, and downy mildew and other fungal diseases in cooler wetter months.