Knot weed problem

[andyboyo]

Unfortunatly the Jap Knot weed from the waste land behind our house has crept into our garden.

The section its growing in I have been levelling out for decking.

Am I right in thinking if I cover this area with a thick UV resistant membraine and then cover with stone that the lack of light will prevent this stuff from growing ........or is that wishfull thinking?

 

[Diyisfun]

I think local councils have a responsibilty to remove / control this plant, have a word with them.

 

[Thermo]

its wishful thinking. It is a very viralant form of weed. As diy says speak to the council and ask them. If its on their land they will havew a responsibilty to remove it. There are specialist companies that remove it. Its so bad its an offence to introduce it into the countryside

 

[paulodipoggio]

would be surprised if weed mat and stone will contain it as it will grow through tarmac/concrete/foundations, etc

all i can suggest is to repeat that council have to treat as it is a "notifiable weed" and this presumably is a private nuisance under law of tort if spreading to your garden?
Think the case was Rylands v Fletcher but memory failing me!

failing that try roundup about 2/3 times a year for 2/3 years and it should go

think it grows with tubers so don't try digging it up - you need to go about a metre or so deep and several across to remove the stuff!!

 

[Thermo]

round up wont touch it

 

[paulodipoggio]

failing that try roundup about 2/3 times a year for 2/3 years and it should go

worked for me!

 

[kdLeeds]

I tried it a couple of weeks ago & it does seem to be dying off