Japanese knotweed

Japanese knotweed is a plant species and is counted among the most "invasive exotics." In other words, species that enter from other countries and expand rapidly and aggressively. Once established, the plant is very difficult to get rid of. Due to its strong growing power, native plant species are displaced.

Fight

This plant is virtually impossible to remove permanently. Therefore, the emphasis is on controlling the existing plants and preventing their spread.

One way to control Japanese knotweed is to cut or mow it down regularly. Generally, the plant shrinks after a few years.

How can you help in preventing the further spread of Japanese knotweed?

To prevent the further spread of this species, we ask you to help us. You can do this as follows:

1. Do not buy this plant or plant it in your garden.
2. Dispose of the (remains of) Japanese Knotweed to our municipal composting site (small and large quantities). 
3. Indicate to the composting site manager that it is Japanese Knotweed. The plant remains are scalded to pieces at a temperature of 55-58 degrees.
4. A small amount may also be presented in a sealed bag at the environmental street. Even there, indicate to the manager of the waste disposal site that it is Japanese Knotweed.
5. Do not compost residues of Japanese knotweed yourself. The temperature in your compost pile will remain too low, which will actually spread germinative remains of Japanese knotweed when the compost is spread.
6. Finally, although this goes without saying, we ask you not to dump remnants of Japanese knotweed in public green spaces and roadsides.
7. Do not spread soil with roots of Japanese knotweed. Soil with roots of Japanese knotweed can be taken to the municipal composting site in Sumar. At the composting site, this soil is kept separate and the germ parts of the plant are sifted out.

In this way, we can work with you to keep Japanese knotweed in check.