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Hi All

Just had a call from a customer asking if we could have a look at their Japanese Knotweed problem in the Cardonald area of Glasgow.

I must confess that I am almost completely ignorant of this and how it might be dealt with.

Are there any contractors in the Glasgow area who might offer assistance with this? I shall pass on her details to whomsoever can help.

Cheers

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  • For non-specialised contractors the only disposal option would be to burn on site.

    Looking into this one for Nicky.
  • The trouble with pernicious weeds in domestic garden situations is what's going on next door - so if that's what you've got Nicky, this won't help you but as an example of how resilient knot-weed is...

    We were asked this time last year to address a sprawling four acre car park which is on the site of an old vicarage so there's several good mature trees and it's a bit of a haven for wildlife. There's five parking areas going up a hill with islands of scrub in between them. It was used by a nearby Rover factory which shut down and it had gotten very overgrown. Our man has built office blocks at either end and he's renting out the parking spaces.

    When we first looked at the place in March/April of last year we saw knot-weed just emerging. He'd had blokes in and a fair bit of earth was bulldozed about and there were dead looking stools in other sections where it had been treated. Our job is to maintain this car-park once a fortnight but we decided to cut down all the scrub and strim and mow everything until it turns into some sort of park-land grass (reducing the cover for vandals which is his main concern) Surely the weed can't survive that, we're working on it but – in the meantime, it was popping up again a few weeks ago.

    There's talk of an insect from Japan being introduced which feed on knot-weed...
  • PRO
    You have to be very carefull strimming it can just spread the problem and make it worse.

    pete said:
    The trouble with pernicious weeds in domestic garden situations is what's going on next door - so if that's what you've got Nicky, this won't help you but as an example of how resilient knot-weed is...

    We were asked this time last year to address a sprawling four acre car park which is on the site of an old vicarage so there's several good mature trees and it's a bit of a haven for wildlife. There's five parking areas going up a hill with islands of scrub in between them. It was used by a nearby Rover factory which shut down and it had gotten very overgrown. Our man has built office blocks at either end and he's renting out the parking spaces.

    When we first looked at the place in March/April of last year we saw knot-weed just emerging. He'd had blokes in and a fair bit of earth was bulldozed about and there were dead looking stools in other sections where it had been treated. Our job is to maintain this car-park once a fortnight but we decided to cut down all the scrub and strim and mow everything until it turns into some sort of park-land grass (reducing the cover for vandals which is his main concern) Surely the weed can't survive that, we're working on it but – in the meantime, it was popping up again a few weeks ago.

    There's talk of an insect from Japan being introduced which feed on knot-weed...
  • Check out this site - http://projects.exeter.ac.uk/knotweed/
  • Great advise by Paul and everyone.

    Here in the northwest we are lucky as I've not heard of a problem myself.

    The weed that causes the biggest headache is mares tail

    Pro Gard said:
    Karl, Yes it would be intresting to see clarification from the EA. I may be able to fill you in a bit however.There is a proven sucess rate with both roundup pro and Timbrel plus the surfacent aditive mixture B, these are what most spraying contractors use as well as local authoritys.

    A course of proper regular spraying over 12 *OR* more months * WILL* eventualy eradicate it. I can confirm this first hand haveing acheived this on a few sites and since I work at these on a regular basis I know that in both examples the knotweed has not come back after a 12 month period of monitoring and spraying and this remains the same even now 24 months since the last spraying of growth was caried out.

    Im not sure if after eradication, the land and soil remains clasified as contaminated and if it does for how long, all the sprying work Ive done with knotweed has always been to control and eradicate not to try and eradicate so soil could leave the site.

    You will find that roundup in particular has no harmfull effect on the soil, it relys on translocation and is non residual.

    Karl Harrison said:
    perhaps it would be good to see an image example of this weed and see a proven record of a chemical that does indeed get rid of it.

    If you speak to the enviroment agency, I don't think you can get rid of it!

    I am no weed or chemical specialist and in this case a professional in the industry could show clarification on this matter.

    I would also seek clarification on the potentail use of continuous chemicals being introduced into the environment and the effects long term, weed or knot!

    Karl
  • The lady has read up on the issue and I get the feeling she is planning to give it a go herself. I did leave contact details and a guesstimate should she wish to get someone in.
  • Aye well Dan - at least she might give you a call back should her endeavours not work out! Did you meet her or just speak by phone? She certainly seemed cost cautious when I spoke to her!

    If the growth extends to the neighbours' gardens Dan you should knock their doors as well!!

    Thanks everybody for the input thus far - the well-oiled LJN machine grinds out another result...well almost!!

    Cheers

    Nicky 

  • Hi guys

     

    If anyone is needing advice about using pesticides then they must speak to a BASIS qualified advisor. Giving advice without being qualified is illegal and will not be tolerated by the Chemicals Regulation Directorate. My son, Graham Rudd, is qualified and will be more than happy to help. The use of pesticides commercially requires the relevant qualifications too.

    Regarding Japanese knotweed, there are many treatment options available with a vast range of prices and time-scales. There are many aspects to consider when specifying the best method for a site therefore it is important to speak to a suitably qualified person. As Director of Invasive Weeds Agency Ltd and by having over 30 years experience of ecological consulting, I am qualified to help with any enquiries.

     

    Please feel free to get in touch 

     

    Nigel Rudd BSc (Hons), CBiol, MSB, CMLI

  • PRO

    I don't think its illegal to discuss the options.

     

    My understanding from the Pesticide Agency is that anyone who intends to sell, supply or otherwise market a pesticide for someone to use must have obtained a Certificate of Competence or sell or supply those pesticides under the direct supervision of a person who holds such a certificate (ie  BASIS qualified).

     

    You will find that most who discuss pesticides on here hold the necessary licenses..

     

    I have 3 guys (myself included) all qualified and if we need advice at point of purchase we refer to the BASIS qualified person (for us that's Rigby Taylors people, amoung others..).

     

    We perform a site assement which provides an audit for the best solution, which could involve physcial or chemical control. If chemical we look at the issues re: spraying or we use Stem Injection Gun.

     

    The latter is proving very effective and allows most situations/locations to be considered.

     

    Is that your understanding or am I mistaken (quite happy to be corrected)....?

    Invasive Weeds said:

    Hi guys

     

    If anyone is needing advice about using pesticides then they must speak to a BASIS qualified advisor. Giving advice without being qualified is illegal and will not be tolerated by the Chemicals Regulation Directorate. My son, Graham Rudd, is qualified and will be more than happy to help. The use of pesticides commercially requires the relevant qualifications too.

    Regarding Japanese knotweed, there are many treatment options available with a vast range of prices and time-scales. There are many aspects to consider when specifying the best method for a site therefore it is important to speak to a suitably qualified person. As Director of Invasive Weeds Agency Ltd and by having over 30 years experience of ecological consulting, I am qualified to help with any enquiries.

     

    Please feel free to get in touch on 0131 441 2953 or at www.invasiveweedsagency.co.uk

     

    Nigel Rudd BSc (Hons), CBiol, MSB, CMLI

  • PRO

    FYI:

     

    BASIS® is an independent organisation set up at the suggestion of the UK Government in 1978, to establish and assess standards in the pesticide industry relating to storage, transport and competence of staff. It is an industry self-regulated scheme, in line with Government de-regulation policy, giving balanced and independent advice to registered distributors. It does not seek to emulate the role of any Government enforcement agency. BASIS became a registered charity in 1999.

     

    BASIS standards and certification are recognised under the Control of Pesticides Regulations 1986; the BASIS Storekeeper and Field Sales and Technical Staff certificates are now required, by law, by all those involved in the storage, sale and supply of pesticides. Also managed by BASIS is the Professional Register for sales and advisory personnel employed within the agrochemical and fertiliser industries and the PROMPT® Register for technicians in the Pest Control Industry. In addition, the Fertiliser Advisers Certification and Training Scheme (FACTS) is run by BASIS on behalf of the fertiliser industry.

     

    Under the Regulations, the statutory Code of Practice for Sale and Supply recommends that all companies have an independent annual assessment and names BASIS as an independent inspectorate. The power of the Code of Practice is similar to that of the Highway Code; failure to follow the Code will not in itself render a person liable to proceedings of any kind, but such failure will be admissible in evidence in any proceedings brought under the Food and Environment Protection Act 1985.



    Gary RK said:

    I don't think its illegal to discuss the options.

     

    My understanding from the Pesticide Agency is that anyone who intends to sell, supply or otherwise market a pesticide for someone to use must have obtained a Certificate of Competence or sell or supply those pesticides under the direct supervision of a person who holds such a certificate (ie  BASIS qualified).

     

    You will find that most who discuss pesticides on here hold the necessary licenses..

     

    I have 3 guys (myself included) all qualified and if we need advice at point of purchase we refer to the BASIS qualified person (for us that's Rigby Taylors people, amoung others..).

     

    We perform a site assement which provides an audit for the best solution, which could involve physcial or chemical control. If chemical we look at the issues re: spraying or we use Stem Injection Gun.

     

    The latter is proving very effective and allows most situations/locations to be considered.

     

    Is that your understanding or am I mistaken (quite happy to be corrected)....?

    Invasive Weeds said:

    Hi guys

     

    If anyone is needing advice about using pesticides then they must speak to a BASIS qualified advisor. Giving advice without being qualified is illegal and will not be tolerated by the Chemicals Regulation Directorate. My son, Graham Rudd, is qualified and will be more than happy to help. The use of pesticides commercially requires the relevant qualifications too.

    Regarding Japanese knotweed, there are many treatment options available with a vast range of prices and time-scales. There are many aspects to consider when specifying the best method for a site therefore it is important to speak to a suitably qualified person. As Director of Invasive Weeds Agency Ltd and by having over 30 years experience of ecological consulting, I am qualified to help with any enquiries.

     

     

    Nigel Rudd BSc (Hons), CBiol, MSB, CMLI

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