National Highways has enlisted the help of sniffer dogs to combat the invasive Japanese Knotweed along the M25 motorway. The canine team includes Fenix, a Dutch Shepherd, and two Spaniels named Nica and Nettle. These dogs are specially trained to detect the plant’s underground roots, bulbs, and shoots, enabling early removal to prevent its spread.
Japanese Knotweed is a serious environmental and structural threat. The plant can grow over 2.1 metres tall and smother surrounding vegetation. It also poses a risk to buildings and infrastructure due to its aggressive growth. Under the Wildlife and Countryside Act 1981, allowing Japanese Knotweed to spread is illegal, making early detection crucial.
Kat Janczur, owner and handler at Canine Detection Solutions, manages the sniffer dogs on a strict schedule to maintain their effectiveness. Each dog works for 30 minutes before taking a break to keep their sense of smell sharp. Kat explained, “The dogs have got the most amazing sense of smell, and they can pick up the scent that Japanese knotweed rhizome gives off into the soil. They’re amazing animals and a great tool in efforts to prevent the spread of these invasive plants on and around the site.”
On the second day of deployment, the team surveyed the A3 northbound verge and Seven Hills Road. The dogs immediately froze upon detecting Japanese Knotweed, allowing Kat to pinpoint the exact location. This quick alert enabled National Highways to act swiftly and remove the invasive weed.
Japanese Knotweed can remain hidden underground for up to 20 years without visible signs above ground. Thanks to the dogs’ keen noses, no area goes unchecked, regardless of how concealed the plant is. Pippa Jordan of National Highways described their approach: “Before we start, we create a map of the area showing nearby plants so we can tackle invasive species right from the start. In this case, we decided to put our paws on the pavement and take a unique approach. These sniffer dogs are not just adorable—they’re incredibly skilled at finding unwanted plants that can be hard to spot.”
These four-legged detectives are playing a vital role in protecting the environment and preventing the spread of invasive weeds. With their assistance, National Highways continues to keep Britain’s roadsides safe and green.
Originally published by UKNIP.
