Polygonum odoratum, commonly known as Vietnamese Coriander, is a perennial herb that is evergreen in warm climates. It is native to Southeast Asia, where it thrives in tropical marshes and along the banks of streams and rivers. This plant typically grows to a height of 2-3 feet (0.6-0.9 meters) and a width of 0.5-2 feet (0.2-0.6 meters). Vietnamese Coriander has a spreading habit with lance-shaped, aromatic leaves that are commonly used in Southeast Asian cuisine for their distinctive cilantro-like flavor.

In cultivation, Vietnamese Coriander is valued for its culinary uses and is often grown in herb gardens, containers, and as a ground cover in tropical-themed gardens. It prefers consistently moist soil and can tolerate wet conditions, making it suitable for water gardens or boggy areas. It thrives in part shade but can also adapt to full sun in cooler climates. During the summer, it produces small, inconspicuous pink and white flowers, but the plant is primarily grown for its flavorful foliage. It is relatively low-maintenance but may require regular watering during dry periods. It can be invasive in ideal growing conditions, so gardeners should consider containing its spread.CC BY-SA 4.0