Agastache rugosa, also known as wrinkled giant hyssop,[3] Korean mint,[4] purple giant hyssop,[5][a] Indian mint and Chinese patchouli is an aromatic herb in the mint family, native to East Asia (China, Japan, Korea, Russian Primorye, Taiwan, India, and Vietnam).

[1] A. rugosa is a perennial plant growing up to 40–100 centimetres (16–39 inches) tall, with square stalks that branch at the upper part.

Chemical compounds found in the plant include:[10] A. rugosa grows well in fertile, moisture-retentive soils and good sunlight.

[15] There are also a number of giant hyssop hybrids with A. rugosa as a parent, such as Agastache × 'Black Adder'[16] and 'Blue Fortune',[14] a Royal Horticultural Society Award of Garden Merit winner.

[17] The plant's Korean name is baechohyang (배초향), but it is more commonly known as banga (방아) in southern parts of Korea, where the herb is extensively cultivated and consumed.