Japanese knotweed removal, control, identification, surveys & treatment in Cornwall, Devon, Bristol & Somerset, UK. Mortgage compliant solutions with a 10 year guarantee. We have a number of cost effective remediation techniques to control / eradicate nuisance invasive weeds, such as Himalayan Balsam, Giant Hogweed and Japanese Knotweed, all of which are covered by our warranty. If you think you have Japanese Knotweed, please call South West Knotweed and we would be more than happy to conduct a survey and establish the best cause of action. Our Japanese Knotweed services cover Cornwall, Devon, Bristol & Somerset. Southwest - Japanese Knotweed Removal Cornwall, Quarry Cottage, Sunny Corner, Portloe, Truro, Cornwall TR2 5RB TRURO 01872 500909 Southwest - Japanese Knotweed Removal Devon, The Generator Quay House, The Gallery, Kings Wharf, The Quay, Exeter, Devon EX2 4AN EXETER 01392 927390 Southwest - Japanese Knotweed Removal Bristol, Somerset, The Exchange, Express Park, Bristol Road, Bridgwater,