Latin name: Polygonum cuspidatum, Fallopia japonica, Polygonum japonicum
Other names: Asian knotweed
All knotweeds, including Japanese knotweed (Fallopia), is a plant of foreign origin in Poland. The Japanese knotweed is a plant originating in South Asia – Japan, China, Taiwan and Korea, to Europe was brought in the 19th century and quickly spread. It is undesirable that the occurrences in the wild are undesirable because they are invasive plants (nowadays in Poland they are already common). However, it can be cultivated for medicinal purposes. It is a perennial shrub that can grow up to 3 meters in height in its natural habitat. In Poland, plants are smaller, do not produce seeds in our environment and form rhizomes and extensive leaves. So it reproduce vegetatively creating large communities, stems resemble a bit of bamboo.