Persicaria posumbu (Polygonum yokusaianum)

Family: Polygonaceae | Edibility: Edible (1/5)

Polygonum yokusaianum is a ANNUAL growing to 0.6 m (2ft). It is in flower from June to September, and the seeds ripen from July to October. The species is hermaphrodite (has both male and female organs). Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

Edible Parts & Harvest Seasons

Edible Parts: Nuts/Seeds, Leaves

Harvest Seasons: Fall, Late Summer

Flavor & Culinary Uses

Young plant - cooked. Seed - raw or cooked. It is rather small and fiddly to utilize. — Young plant - cooked.; Seed - raw or cooked.; It is rather small and fiddly to utilize.

Habitat & North American Range

Woods in foothills all over Japan. Mixed forests on mountain slopes, moist valleys at elevations of 100 - 3000 metres in China. (Zone 4, Zone 5, Zone 6, Zone 7, Zone 8)