Sheffield Knotweed Control is a specialist weed control service operating in South Yorkshire, Northeast Derbyshire and the Peak District. We offer affordable and effective solutions to invasive weed problems. We specialize in offering a Stem Injection herbicidal treatment for Japanese Knotweed. This is the ideal method for eradicating Japanese Knotweed where you want minimal disturbance to the site, E.g. in gardens, allotments, parks, golf courses, fishing ponds,etc. This method is most environmentally friendly way of applying herbicide as there is no danger of surrounding vegetation being contaminated with the herbicide.