Himalayan Balsam is an invasive non-native species that crowds out other plants. It pulls up very easily and is completely non-toxic. This is a great activity for all the family (children must be accompanied and supervised). Please wear stout shoes and long sleevs and trousers (to avoid nettle stings) and bring waterproofs and a packed lunch if staying all day.We will be working from Consall Station downstream to the Flint Mill Lock