Polygonum cuspidatum, also known as Japanese Knotweed, or by the Mandarin Chinese name of Hu Zhang, is native to Asia, and is a robust perennial in the Buckwheat family. It tends to grow in thickets, has upright racemes of creamy white flowers, large oval to heart-shaped leaves, and chunky, hollow, stems that resemble bamboo. It is sometimes sold under the alternative names of Fallopia japonica or Reynoutria japonica.
In traditional Chinese medicine, Japanese Knotweed is described as bitter and slightly cold, and its uses include supporting the body’s natural detoxification pathways, increasing blood circulation, clearing heat, for various skin concerns, menstruation support, improving liver and cardiovascular health, and as a diuretic.*