Japanese knotweed (Fallopia japonica) is one of the biggest threats for our nature and infrastructure. The specie is spreading fast. The strong rhizomes and stems of this plant crowd out native plant species and can cause damage to buildings, pipelines and roads. Every year municipalities and provinces spend a lot of time, money and energy on treating Japanese knotweed without an effective result.

To prevent Japanese knotweed from spreading and covering all land area in the Netherlands, it is imperative that this plant is treated as soon as possible. Tibach has developed an environmentally friendly, effective and patented method that treats this plant by freezing the soil.

Wageningen University Research(WUR) has investigated the effects of the freezing treatment on the rhizomes of Japanese knotweed and the effect on soil life. It has been found that this is a selective treatment method that only controls the invasive alien species, and does not cause damage to soil life and the seed bank. The research report can be downloaded via contact form.

Hundreds of square meters of contaminated soil with Japanese knotweed have successfully been treated at various Dutch municipalities.