A reoccurring client has asked me to remove Japanese Knotweed from one of her properties. I told her this is a huge undertaking and that if she really wanted it gone I would need to bring in a backhoe. She’s wasn’t into it, for she is selling the property. I told her I would do what I could but no promises. My new plan is to lay down some 2ozWCF, top soil, and mulch it. Figure the roots will move from the area and as long as someone keeps the lawn mowed it should vacate. 😂🤣😂 really this is wistful thinking. Anyone have any pointers? Whoever the dink it who decided it was a good idea to line our highways with it...
The answer depends on the legislation in your country.
For example in the UK, it is not illegal to have knotweed in your garden, but it is illegal not to control its possible spreading into adjacent properties. If such spreading does occur it can be subject to a criminal prosecution under an amendment to the Anti-social Behaviour, Crime and Policing Act 2014.
Garden waste containing knotweed is classed as 'controlled waste' under the Environmental Protection Act 1990, which requires disposal at licensed landfill sites, and transportation by a registered waste carrier.
If you sell a property in the UK, you are required to make a statement whether or not knotweed is present, and if it is present you are required to state what is the management plan by a professional eradication company to remove it, and whether that plan has a transferrable guarantee. These declarations are required by mortgage lenders.
The idea that you might contain it by weed control fabric and regularly mowing the lawn could be politely described as "fanciful."
You can eat it if you want an interesting treat: https://www.youtube.com/watch?v=3QzMNKAQo9Y