S4JK are invasive weed management experts based in Manchester, England. Our team comprises fully certified surveyors, qualified to spray Japanese Knotweed with herbicide, as well as stem injecting.
Japanese Knotweed is an invasive species of plant; that can be very harmful not only to your health but also your surroundings if left untreated. The plant also has an invasive root system, which is active all year round below ground, that can still cause damage to concrete and buildings. The plant is usually more active during spring / summer than in winter.
Most public parks now have signage warning of how to identify such plants and the dangers. Please also take some time to look at the images of Japanese Knotweed on our website, so you can identify this type of weed when outdoors. It's especially important to help children understand the dangers of this toxic species and how to identify this type of weed.
Proper care and attention need taking when removing Japanese Knotweed, so don't try to deal with eradication yourself. Get a well-trained professional to handle it for you. Our team will provide a free site visit to identify if you have a Japanese Knotweed problem, and then explain the best course of treatment and costs involved. If you’re happy with everything, our dedicated team will take care of the rest, from the removal of the invasive plant to aftercare and maintenance. We also deal with other types of invasive species, including Giant Hogweed and Himalayan Balsam.