LVRPA uses glyphosate to control Giant Hogweed. It is possible to control it by digging but it means wearing protective clothing. Machinery (ploughing) can be used but since it is heavily concentrated on the banks of the Lea, this is regarded as impractical.
Centre for Ecology & Hydrology information sheet about Giant Hogweed.
Environment Agency publication managing invasive non-native plants.
Environment Agency fact sheet Control of invasive non-native species.
