Polygonum multiflorum Seeds | He Shou Wu
LATIN NAME: Polygonum multiflorum
COMMON NAME: He Shou Wu Seed, Fo-ti, Chinese Knotweed
Plant Profile
He Shou Wu Seed (Polygonum multiflorum) is a vigorous, twining, herb in the knotweed family, native to woodlands, thickets and hedgerows of the east, while it has been cultivated for its root. These traits together are what have kept the plant in gardens for so long.
Science & Biotechnology
Fo-ti illustrates better than any other herb why processing matters. The Chinese Pharmacopoeia controls the drug through the stilbene glycoside THSG and the anthraquinones emodin and physcion, and traditional preparation — repeated steaming with black-bean juice, historically nine cycles — measurably lowers the anthraquinone burden. Raw he shou wu has become one of the most frequently implicated herbs in idiosyncratic drug-induced liver injury, with case series documented worldwide; prepared material carries a substantially lower, though not zero, risk. Published guidance therefore restricts the raw drug to short courses and favours the prepared form. Anyone with existing liver disease should avoid it.
Botanists studying the knotweed family regularly include Polygonum multiflorum in comparative work, and the species also appears in horticultural trials aimed at gardeners and growers. The Polygonum multiflorum has a real and distinguished place in research. Breeders and collectors still work with it, so well-kept seed remains available.
Uses & Benefits
He Shou Wu Seed brings genuine presence to the garden and earns its keep across the growing season. Polygonum multiflorum is a vigorous, twining perennial of woodlands and hedgerows of the East, bearing heart-shaped leaves and small, white flowers in the summer. Its flowers feed bees and insects, and its twining growth gives a fine cover on fences and woodland edges, while its thick, tuberous root stores energy for the plant’s vigorous growth. To raise polygonum multiflorum, sow seeds in pots of moist, open soil in a bright, cool place, keep them gently watered, and grow little plants on in the light. It takes hold quickly and asks for no special treatment from then on.
Knotweeds span the famous tonic He Shou Wu for hair and vitality, the resveratrol-rich Hu Zhang, and smartweeds of folk use; He Shou Wu’s record includes rare liver-injury reports, so the herb belongs in professional hands while the genus’s ornamental fleeceflowers grace the garden.
Growing from Seed
Starting He Shou Wu Seed from seed is simple and satisfying. Broadcast the seed thinly over a fine, free-draining compost, sieve a little more compost on top, and water with a fine rose. Pot the young plants on as they grow, harden them off gradually, and plant them into their final positions when sturdy.
Our Take
Few garden plants carry such a documented history of use as this one does. Given the right start, He Shou Wu Seed, Fo-ti, Chinese Knotweed is a long-term garden companion. Once the young plants are away, there is little left to do but watch them grow.
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