Non-native, invasive plants are a significant threat to the survival of natural ecosystems and can involve significant time and expense to treat prior to construction. It is vital therefore that a developer knows the location and extent of invasive species on a site – ideally well before a project starts.

In the UK, the most commonly encountered invasive plant is Japanese knotweed, followed by Himalayan balsam, and giant hogweed, the leaves of which are toxic to the touch. Japanese knotweed in particular can be extremely invasive, spreading rapidly and even penetrating through finished surfacing. It can be time consuming to eradicate.

Species like Japanese Knotweed are listed under the Wildlife and Countryside Act 1981 as a plant that must not to be planted or otherwise introduced into the wild because of their regenerative properties and invasive habits. The Environmental Protection Act 1990 also lists knotweed as ‘controlled waste’ to be disposed of properly. Landowners have a legal obligation not to cause it to spread.

We offer a full range of invasive species control measures and can advise on the legislative position and provide methods of eradication or control if needed.