Like most other invasive weeds including Japanese knotweed, it is illegal to allow this weed to grow onto neighbouring land, agricultural or farming properties. If this encroaches on your neighbour’s land then they may be entitled to make a claim against you. Equally, you can make a legal claim if it has spread to your property, agricultural or farming land from a neighbouring property.

Under the Wildlife and Countryside Act in England and Wales it is an ‘offence to plant or otherwise cause Himalayan Balsam to grow in the wild’. This includes spreading the species or transferring polluted ground material from one area to another.

Himalayan balsam needs dealing with before it sets seed. If control is undertaken early enough to prevent flowering (and if this is achieved before seed has set) then eradication is possible in two or three years.

Alternatively, seek professional assistance:

• Spraying – chemical application is the most effective treatment available, although it can take several years to eradicate this species if the plants are well established. The seeds can remain in the soil for several years, therefore, a long-term strategy involving herbicide treatment is recommended.
• Excavation – A quicker method of removing involves the clearing of surface growth and the removal of ground material polluted with roots and seeds.