Elsholtzia rugulosa, commonly known as Vietnamese Balm, is a perennial herb native to the forest margins, grasslands, and scrub areas of Burma (Myanmar), Vietnam, and China. It is a member of the mint family, Lamiaceae, and is characterized by its aromatic foliage and spikes of purplish flowers that bloom in late summer to fall. This plant typically grows to a height of 30-60 cm (12-24 inches) and spreads to a similar width, forming a bushy clump.

Vietnamese Balm is valued for its fragrant leaves and flowers, which are used to make a local herbal tea in China. It is also recognized for its medicinal properties, particularly in the treatment of colds and fever. Additionally, it serves as a honey plant, attracting bees and other pollinators to the garden. In cultivation, Elsholtzia rugulosa prefers full sun to part shade, well-drained soil, and moderate watering, making it relatively easy to maintain. It can be used in herb gardens, as a border plant, or in naturalized areas. While not commonly found in Western gardens, it has potential as an aromatic and medicinal addition. Gardeners should be aware that in some conditions, it may self-seed and become somewhat invasive.CC BY-SA 4.0