We have started to collect photos of examples of bad practice. These can be illegal activities : moving knotweed waste without a permit; spraying within the legal buffer surrounding water courses or just doing things that spread knotweed.
A 4067 at Ynysmeudwy. Council spreads knotweed by mowing verge. New infection caused by chipped knotweed stays green longer than original stems Oct 2009
Morriston. Strimmed knotweed scattered over garden ready to infect fresh ground. (as little as 0.7 gm can grow into a new plant) Oct 2009