Knotgrass is a perennial herb with small, oval-shaped leaves and delicate, white flowers. It has a slightly bitter and astringent flavor and is commonly used in traditional herbal medicine. It can also be brewed into a tea for a refreshing and soothing drink.

Knotgrass can be used in all the ways that buckwheat is used, either whole or dried and ground into a powder for use in pancakes, biscuits, and more.  

Botanical Name: Polygonum aviculare 

Also known as: Knotweed, Mexican Sanguinaria, Rau đắng