Floron risk assessment of four Asian knotweeds in Europe

This report by Floron (Floristic Research Netherlands) describes a risk assessment of the 4 Asian knotweeds found in the Netherlands: Japanese knotweed, giant knotweed, Bohemian knotweed and Himalayan knotweed. The NVWA asked to look at the risks for biodiversity, ecosystem services and other social values in the Netherlands.