Polygonum cuspidatum, Hu Zhang Polygonum cuspidatum, Hu Zhang 虎杖 Bushy Knotweed, Giant Knotweed Hu Zhang (TCM) Polygonum cuspidatum (as Fallopia japonica)Curtis, W., Curtis’s botanical magazine (1800-1948) Polygonum cuspidatum(Photo  by Superior National Forest) (Wikimedia) Polygonum Hu Zhang root slice(Adam, 2024) Botanical name: Polygonum cuspidatum (syn. Reynoutria japonica, Fallopia japonica) Parts used: Rhizome Temperature & Taste: Cold, dry. Bitter Classification: K. Move the Blood Uses: 1. Moves the Blood, Clears the Channels, Eases Pain:-Amenorrhea, Dysmenorrhea (TCM, West)-Wind-Damp painful obstructions of the muscles and joints-Trauma, Bruising2. Clears Heat and Damp:-Jaundice, Cholecysitis, Acute Hepatitis-Turbid, painful and dribbling Urine-Gravel and Stones of the Bladder and Gall Bladder-Turbid and foul smelling Leukorrhea3. Clears Heat and Toxin:-Boils, Abscesses, Toxic Swellings (TCM, West)-acute Appendicitis-Burns, Scalds-Snakebite, Venomous Insects Bites4. Clears Phlegm-Heat, Stops Cough:-Phlegm-Heat Cough, Bronchitis5. Guides Down, Purges Heat and Bile:-Constipation from excess Heat-Hypertension Dose: Decoction: 9–15 gramsThe fresh leaf may be crushed for external application, or the dried root can be powdered and applied topically. Comment: 1. Bushy Knotweed (here) is similar in effect to Knotweed (P. aviculare). However, Bushy Knotweed is stronger to move Blood.2. It is a rich source of resveratrol. Preparation: 1. Wine Prepared Polygonum Hu Zhang:  The herb is covered with yellow rice wine,…

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