Japanese Knotweed

Japanese Knotweed can grow just about anywhere and is commonly found around derelict locations, riverbanks, railways lines, and within the highway.

The weed can cause damage to ecosystems by growing to such a size that it blocks out sunlight vital to weaker plants and can grow up to 3 metres in height and at an astounding rate of 2cm per day.  Like any other weed, Japanese Knotweed spreads quickly but due to its damaging capability it is illegal to plant or dump anywhere in the UK.

The Asian weed was introduced to the country by the Victorians, who initially found use for it as an ornamental plant.  The knotweed began to take over gardens, and with no natural enemy to counter it, it has become the country’s most invasive plant.  Government experts have suggested that to control the plant nationwide would cost over £1billion!

The Japanese Knotweed has already had to be removed from the East London site of the 2012 Olympics for fear of it causing costly damage.  Though it poses no direct threat to humans or animals, if found the weed should be removed and sprayed by professionals.

If you come across any Japanese Knotweed within the highway do not attempt to dispose of it yourself. Note the location and call Roadline on 0800 62 62 03.