You must prevent Japanese knotweed on your land spreading into the wild. Soil or plant material contaminated with non-native and invasive plants like Japanese knotweed can cause ecological damage.

You do not have to remove Japanese knotweed from your land, but you could be prosecuted or given a community protection notice for causing a nuisance if you allow it to spread onto anyone else’s property.

Many non-native plants cannot be composted because:

  • They’re usually persistent
  • They’ll survive the composting process
  • They usually infest areas where the compost is used