I can't see Saddads thread (perhaps it's on another section).
Watched an item on breakfast TV about the knot weed this morning.
Drove to work and thanks to the report, I recognised it all around the car park, on land belonging to London Underground (Central Line).
According to the report, it's roots reach a depth of three yards and covers thousands of acres.
I imagine the furore is whether to introduce a species of insect into the country to combat it, the scientists stated that they only live on knot weed,
and tests are more stringent than they were previously.