Japanese Knotweed is a harmful invasive alien species, that spreads through trough root and stem pieces within yard waste or soil material. You can find more information on the Japanese Knotweed and its control methods on the Luontoportti and Laji.fi -sites.
- Pack knotweed waste in a tightly closed double garbage bag. Take them to the sorting station as waste consisting of invasive alien species.
The waste belongs to the following waste type:Harmful invasive alien species
Waste treatment centre, Sorting station