A SCHEME to tackle a huge weed considered an environmental pest is to get under way in the region.

A three-year fight is to be launched against giant hogweed growing along the banks of the River Wear, in County Durham.

It will involve spraying chemicals to kill the plants while they are still short.

The results will be monitored and a report produced after three years that will be published nationally.

The giant hogweed, which was introduced to Britain in the 19th Century, can grow to between 15 and 20ft tall.

It displaces other plants and produces a sap that can cause a rash or painful blisters on human skin.

In the past, spraying has been left to individual landowners and, because the plant spreads quickly, it has taken over large patches of riverbank.

The project is being carried out by various organisations, including the Environment Agency, Durham County Council, and Chester-le-Street District and Durham City councils.

It has won £58,000 sponsorship from an environmental trust set up by waste firm SITA, and is being supported by the multinational chemical firm Monsanto, which has been embroiled in the controversy over genetically modified crops.

Durham City councillor David Bell, who has responsibility for environmental matters, said: "It's great news that Durham is leading the country in helping to control the spread of this harmful plant.

"We have beautiful riversides along the Wear and we need to protect the range of species we have and the strength of the banks, both of which the giant hogweed is eroding."