Conspicuum Knotweed (Polygonum conspicuum)

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

Polygonum conspicuum is a PERENNIAL growing to 0.6 m (2ft). It is in flower from July to October, and the seeds ripen from August to October. The species is dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required). . The plant is not self-fertile. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils.

Edible Parts & Harvest Seasons

Edible Parts: Nuts/Seeds, Leaves

Harvest Seasons: Early Summer, Fall, Late Summer, Spring

Flavor & Culinary Uses

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

Habitat & North American Range

Wet sunny places in lowland, C. and S. Japan. Streamsides and riverbanks from sea level to 1500 metres in eastern China. (Zone 4, Zone 5, Zone 6, Zone 7, Zone 8)