Fragrant Knotweed, also known as “Laksa leaves”, “Vietnamese coriander” and “Rau răm” in Vietnamese, is a native herb in Southeast Asia, mostly cultivated for its use in culinary. The plant is a sprawling annual herb, has reddish stems that turn up at the tips; the roots form freely from the nodes. All parts of the plant are fragrant when bruised. Leaves have distinctive sheath where the petiole joins the stem. They have a blade-like shape, medium to bright green, and often has a darker green or purple blotch in the lower middle area

Fragrant knotweed’s aroma is like that of coriander, warm and spicy, with a lemon tang, while the flavor is lemony and peppery at the same time.

Fragrant Knotweed
Persicaria odorata
Southeast Asia
Length 8-15 cm
Frozen PA vacuum bag 500gram-1kg-2kg/bag. Styrofoam box 5kg, 10kg, 20kg/box
How to eat

Fragrant Knotweed is a popular herb in Southeast Asian cuisines, notably Vietnam. The most common way to consume it is to be eaten fresh or added as garnish or decoration to the dishes
The plant is, used in many Vietnamese dishes such as eel porridge, chicken salad, duck eggs, mussel porridge, Banh cuon,... contributing to the special flavor of the dish. In Singapore and Malaysia, the shredded leaf is an essential ingredient of laksa, a spicy noodle soup, hence the name “laksa leaves”

Health benefit

Not only is a spice used in delicious dishes, but fragrant knotweed also has many health benefits. It contains flavonoids - a very good antioxidant, which helps prevent aging and prevent cancer cells from growing. Besides, it also has many health benefits, including aiding digestion, except for colds, active blood detoxification, and anti-inflammatory.

Export Overview

Fragrant knotweed has been exported to countries and regions such as The United States, EU, Canada,... due to the demand and need from the Asian community of said countries and the rising interest in its health benefit and culinary use from the Western consumer 


Currently, FOSACHA has fragrant knotweed as one of our main exported products. We work closely with the farms from our supply chain throughout the production process, from FOSACHA works closely with our farms throughout the production process, from planting, harvesting to sorting, grading the top quality of the fragrant knotweed for any potential importers from international markets. Most importantly, our Vietnamese fragrant knotweed must be GlobalGAP-compliant, able to meet the standards of food hygiene and safety, as well as be of clear origin to be traceable. FOSACHA is confident that we will always provide our customers with high-quality products that satisfy global consumers. 

If you are looking for a reputable supplier to import high-quality, VietGAP, GlobalGAP compliant Vietnamese fragrant knotweed, as well as establish a long-term, mutually beneficial partnership, please contact us at the following information for further discussion.