White Knotweed, Chinese knotweed
Polygonum weyrichii
Family: Polygonaceae
What it is like
A herb. It has rhizomes. It grows 1.5 m tall.
There are about 50 Polygonum species.
Where it is found
It suits hardiness zones 4-8.
Countries/locations it is found in
Asia, Japan
How it is used for food
Edible parts
Leaves, seeds
How it is grown
Its other names
Local names
Synonyms
Pleuripteropyrum weyrichii (F. Schmidt) H. Gross; Polygonum savatieri Nakai;