Thoughts and news about invasive weeds and The Knotweed Company

Giant hogweed is now flowering – biohazard! Saturday 16th June 2018

Giant hogweed is now flowering throughout the country. This is the most dangerous time of the year, to get the sap on your skin as the combination of strong sun light and the sap from the plant can result in severe burning and blistering.

It is however important to get this weed treated professionally. Please do not panic and chop it all down, that can be very dangerous to do. This weed needs to be treated with an appropriate herbicide, which will safely kill the plant and the tap root or carefully removed if there is no other option.

We have been seeing an increase in Giant hogweed infestations on the last few years. This is usually because people do not take action as soon as they see the first signs of an infestation (and flowering umbels 5 metres high are fairly obvious to most people). We are seeing some very large affected areas (hundreds if not thousands of square metres). This is not only potentially hazardous, but can also affect offering of mortgages on the affected properties, finally invasive weeds are detrimental to the environment.

With staff covering all of England & Wales, speak to the professional company about your Giant hogweed (and other invasive weed) problems, contact us on 01327 703129 or 01962 886060 or email us on or

Japanese knotweed experts. Friday 8th June 2018

The word ‘experts’ or ‘specialists’ in the Japanese knotweed industry has a long history of being misused by companies or people. These terms may be used by credible companies, but often are not. When I see a new Japanese knotweed company advertising, I often check their website out. Sometimes I find that our photographs have been stolen from our website and used without permission; sometimes I find a good informative website and sometimes I find shockingly bad ones!

I’ve found one shocker recently. According to their website they specialise in difficult weeds such as Japanese knotweed, but critically some of the photographs that they show which are supposed to be Japanese knotweed – are not! They actually show photographs of Russian Vine - a completely different plant and then you read their totally inaccurate description of knotweed winter canes being tough and hard to cut (actually they are fragile, flimsy canes, easily broken) – were they thinking of bamboo canes?

We call ourselves professionals, we are qualified and experienced in the invasive weed sector. Critically we’ve been working in this field for 14+ years (exclusively with Japanese knotweed and other invasive weeds); before that I was treating invasive weeds as part of my overall management duties, so I can claim to have more than 2 decades worth of experience – and I am not the only one in the company that can (nearly) claim that!

If you are looking for an expert – speak to the professionals, we are competent and experienced at our job.

With staff covering all of England & Wales, speak to the professional company about your Japanese knotweed (and other invasive weed) problems, contact us on 01327 703129 or 01962 886060 or email us on or

Japanese knotweed – Certificated Surveyor (CSJK). Monday 4th June 2018

The Property Care Association (PCA) of which we have been members since early 2013, developed a rigorous training and examination process for technicians and surveyors in the invasive weed industry. We are proud to say that Jim Glaister and I (Brian Taylor) were also able to contribute quite extensively to the process.

Every contractor and consultant member of the PCA invasive weed group should now have at least one person qualified to the CSJK standard and soon every surveyor should be qualified.

The Knotweed Company always seeks to lead the field with their expertise and training. All of our surveyors are qualified and hold the CSJK. Our latest candidate to sit the examination – Aaron Way – has now been told that he has passed his examination and is entitled to put the letters CSJK after his name. He joins our group of surveyors which includes: Brian Taylor, Jim Glaister, Paul Copper, Kevin Gilderson and now Aaron Way. I think that we employ more qualified surveyors than any other company in the United Kingdom.

The CSJK is a tough examination with a high failure rate – it combines a written essay examination, a practical identification test and a final viva before two experienced surveyors.

Prior to the examination process, any one could set up a business and call themselves ‘experts in Japanese knotweed’. I can remember speaking to some of these so called ‘experts’ who couldn’t identify Japanese knotweed (this is no joke).

If you are looking for an expert – speak to the professionals and make sure that your surveyor is qualified to the CSJK standard.

With staff covering all of England & Wales, speak to the professional company about your bamboo problems, contact us on 01327 703129 or 01962 886060 or email us on or

Bamboo – is this the next Japanese knotweed? Wednesday 23rd May 2018

We are experienced in dealing with all sorts of invasive weeds, from Giant Butterbur to Knotweed hybrids, we can handle it.

However there is one group of plants, which still has the power to amaze me – these are the bamboos. Bamboos spread by underground stems – rhizomes – they can destroy hard surfaces, ruin neighbours gardens and are hard to kill and control. Sounds familiar? Yes they are very similar to Japanese knotweed! However they are also a woody species and really hard to dig up or to cut down.

A few fun facts about bamboo:

Bamboo can grow up to 35 metres high. Yes 35 metres. Now most bamboos in this country don’t reach that height… typically a maximum height of 20 metres… but in your garden?

The shoots (culms) reach their full height in the first growing season, typically taking 3-4 months to do this. The culms then remain alive for some years, creating sugars by photosynthesis and passing this to the rhizomes to make more culms…

A new culm might grow up to 1 metre in a day…

Plant bamboo as a screen and quite often they will simply spread into your neighbour’s garden as well – please note that they may not too pleased about this! Also if you’ve planted a tall bamboo, neither you nor your neighbour will get to enjoy the sunshine very much.

Bamboo has a definite life expectancy and often reaches flowering point (after years or decades) and then may die after seeding. Rats love the seed by the way!

Most bamboos (in my experience) are not suitable for planting in your average garden. They are very hard to successfully contain with root barriers (bamboo rhizomes can grow over the top or angle down below the barrier) and other methods require a lot of constant monitoring and work. Bamboos are generally speaking not happy to be planted in containers and will happily send roots out of the bottom of the container…

Bamboos are fairly cheap to buy - however if I may advise you - they can be very expensive to get rid of once established and can cause significant neighbour issues.

We’ve been eradicating bamboo for years. We have a successful track record of dealing with problematic bamboo issues.

With staff covering all of England & Wales, speak to the professional company about your bamboo problems, contact us on 01327 703129 or 01962 886060 or email us on or

Japanese knotweed – can you ever eradicate it? Wednesday 25th April 2018

Today a number of media outlets are promoting a scary message, which is basically saying that Japanese knotweed can never be eradicated.

Behind the scary headlines, is an excellent research paper titled ‘Optimising physiochemical control of invasive Japanese knotweed’ (Jones et al, 2018). In this paper, the researchers have found that summer and autumn applications of glyphosate based herbicide offer the best control; furthermore control programmes have to last for many years – longer than the experimental work has so far lasted.

This research work confirms many of my views and should not be a surprise to anyone in the industry. I strongly recommend reading the paper to anyone who is truly interested in the subject.

So back to Japanese knotweed - can you eradicate it with herbicides? Yes you can.

However it typically takes many years to do this. Yesterday I finally signed off three sites in South-west London which started their eradication programme in 2006 and 2007. They completed their monitoring period (minimum 2 years) late last year. Other sites (much larger infestations) for the same client started in 2005 and are still making growth as of last year.

The Knotweed Company has been treating Japanese knotweed for years. We can provide suitable eradication and control programmes for all types of properties or situations – it does however take a few years!

With staff covering all of England & Wales, speak to the professional company about your Japanese knotweed problems, contact us on 01327 703129 or 01962 886060 or email us on or

Japanese knotweed is growing near you Read more

Japanese knotweed growing new shoots spring Read more

Japanese knotweed – it wakes! Tuesday 3rd April 2018

Japanese knotweed is awake and growing near you Read more

Japanese knotweed sleeping underground Read more

Japanese knotweed – under the snow. Wednesday 28th February 2018

Japanese knotweed – do not disturb! Read more

Japanese knotweed dormancy. Friday 9th February 2018

Japanese knotweed – sleeping beauty? Read more

Bamboo – hungry pandas wanted. Friday 26th January 2018

Bamboo & Japanese knotweed – is there a difference between these two invasive weeds? Read more

Japanese knotweed – flu -Tis the season to cough and sneeze Read more

Japanese knotweed control eradication solutions 2018 Read more

Japanese knotweed – 2017 review. Thursday 21st December 2017

Japanese knotweed 2017 mortgage legal review Read more

Japanese knotweed – effective treatment control eradication Read more

Japanese knotweed – property sales mortgage problems Read more

Japanese knotweed – Pay as you go. Wednesday 26th July 2017

Japanese knotweed – pay as you go or lump sum payment? Read more

Giant hogweed… the killer weed Wednesday 12th July 2017

The Knotweed Company – do you have Giant hogweed growing near you? Read more

Japanese knotweed – is it in your garden or street? Read more

Japanese knotweed – student of the year award Read more

Japanese knotweed growing quickly near you Read more

Japanese knotweed – new growth, large shoots Read more

Japanese knotweed – spring shoots. Thursday 2nd March 2017

Japanese knotweed – is it growing yet? Read more

Robin Waistell v Network Rail. Friday 10th February 2017

Legal precedent Japanese knotweed Read more

Japanese knotweed Situations vacant Daventry Recruitment Read more

Japanese knotweed and mortgages 2017. Wednesday 11th January 2017

Japanese knotweed mortgage reports, expert witness Read more

Japanese knotweed news 2016 job vacancy Read more

Japanese knotweed Bohemica and the PCA Read more

Japanese knotweed autumn treatment window Read more

Bees and Japanese knotweed. Thursday 8th September 2016

Japanese knotweed honey Read more

Japanese knotweed – large and very large stands near water Read more

Japanese knotweed – PCA Certificated Surveyors Read more

Japanese knotweed – Superknotweed! Read more

Japanese knotweed the fastest plant Read more

Japanese knotweed growing now Read more

The Buck Stops Here. Thursday 21st April 2016

Customer service, Japanese knotweed and BT Read more

Properly qualified Japanese knotweed surveyor? Read more

Aliens living near you! Wednesday 17th February 2016

Are aliens living in your garden? Read more

The holly and the knotweed? Training day. Read more

The Knotweed Company – selling a property or buying one with Japanese knotweed Read more

The Knotweed Company – new shoots, new resolutions and news about Japanese knotweed Read more

Wake Up Call For Giant Hogweed Tuesday 14th July 2015

Giant hogweed in the news. Blisters, burns, reasons to have it treated Read more

Japanese knotweed – spring shoots. Wednesday 8th April 2015

Japanese knotweed – new shoots and situations vacant in Daventry Read more

Japanese knotweed Certificated Surveyor Wednesday 11th February 2015

The Knotweed Company – employing a qualified and professional workforce Read more

Japanese knotweed in winter. Tuesday 27th January 2015

Japanese knotweed – The Knotweed Company in the winter Read more

Japanese knotweed – new legislation and regulation Read more

Radio Knotweed (again!) Monday 13th October 2014

Another successful appearance by Jim Glaister on BBC Radio Solent, this time on the Saturday morning show with Sasha Twining. Jim was one of three guests invited to look at and comment on the days’ papers and then he was on his own as the ‘expert of the d Read more

How do you get rid of Japanese knotweed? Wednesday 20th August 2014

Getting rid of Japanese knotweed! Read more

Radio Knotweed! Monday 7th July 2014

Invasive weeds on the air! Read more

Japanese knotweed radio show Read more

Snakes and Knotweed! Tuesday 15th April 2014

Japanese knotweed – snakes in the undergrowth Read more

Japanese knotweed – Spring growth? Thursday 20th March 2014

Japanese knotweed – is it growing yet? Read more

Japanese knotweed –new growth, bamboo problems and treatment Read more

Japanese knotweed in 2014. Friday 3rd January 2014

Japanese knotweed house mortgage 2014 Read more

Japanese knotweed in 2013 Read more

Japanese knotweed and mortgages. Monday 9th December 2013

Japanese knotweed – mortgages and mortgage problems Read more

Not about knotweed. Tuesday 19th November 2013

Something different! Read more

Busy, busy, busy... Thursday 3rd October 2013

Japanese knotweed – your treatment window for 2013 is ending soon! Read more

The best time to treat Japanese knotweed! Wednesday 11th September 2013

PCA Accredited Contractor Herbicide Programme Read more

Japanese knotweed – 2013 Code of Practice. Read more

Japanese knotweed in Hampshire, Dorset, Sussex, Surrey, London and Kent. Read more

Japanese knotweed in Hampshire, Dorset, Sussex, Surrey, London and Kent. Read more

Japanese knotweed in London and the South of England. Read more

Property Care Association Japanese knotweed survey treatment Read more

Identify your knotweed – it’s growing! Read more

Still looking for spring... Wednesday 10th April 2013

Competitive and professional Japanese knotweed services across England and Wales Read more

Japanese knotweed problem? Call the professionals! Read more

Buying a home? Think you’ve got a Japanese knotweed problem? Read more

Happy New Year! Tuesday 8th January 2013

The Knotweed Company in 2013 Read more

2012 – thoughts from our year. Read more

Winter and conservation contracting. Read more

Start your treatment this year! Wednesday 24th October 2012

Japanese knotweed – treatment alert! Read more

Weather and the spread of Japanese knotweed. Wednesday 26th September 2012

Japanese knotweed – spread alert! Read more

Japanese knotweed – for all your knotweed solutions in England and Wales. Read more

Japanese knotweed – Local prices from a national expert contractor. Read more

Speedy and reasonable quotations! Thursday 5th July 2012

Japanese knotweed – get the best prices from The Knotweed Company! Read more

Have gun, will travel. Tuesday 26th June 2012

Use the professional contractors, not the cowboys. Read more

Local rates for eradicating Japanese knotweed from a national contractor. Read more

Choose a professional Japanese knotweed surveyor Read more

Specialist Invasive Weed Surveys. Friday 25th May 2012

Japanese knotweed – Professional invasive weed surveys to RICS guidelines Read more

Japanese knotweed ready for treatment? Read more

Japanese knotweed – we have the best photographs and pictures on our website. Read more

Choose the professionals to eradicate your knotweed – choose The Knotweed Company. Read more

Giant Hogweed and Japanese knotweed – growing fast now. Read more

If you’re selling/buying a house with Japanese knotweed you should read this. Read more

Japanese knotweed – cost effective solutions from the professionals Read more

Root barriers for Japanese knotweed. Wednesday 22nd February 2012

Japanese knotweed root barriers - expert installation. Read more

Buying or selling a property with Japanese knotweed? Read this. Read more

Finding Japanese knotweed near my home. Read more

A busy start to 2012. Tuesday 17th January 2012

A busy start to 2012, in London and the midlands. Read more

A Japanese knotweed Christmas and thoughts for 2012 Read more

Japanese knotweed grows through a house. Read more

The best herbicide programmes by the best contractor. Read more

Professional bee friendly services. Read more

For the best herbicide programmes – call us. Read more

Don't Panic! Saturday 13th August 2011

Japanese knotweed don't panic, call on the professionals Read more

Pay As You Go. Friday 29th July 2011

Cost effective Japanese knotweed eradication! Read more

Why choose The Knotweed Company? Thursday 7th July 2011

Choose the best contractor, choose the professionals! Read more

Japanese knotweed and mortgages. Friday 24th June 2011

Japanese knotweed surveys, surveyors and a suggestion for Solicitors Read more

Have gun, will travel. Wednesday 8th June 2011

Japanese knotweed – targeting herbicide to ensure maximum effect Read more

Japanese knotweed and mortgages. Wednesday 25th May 2011

Japanese knotweed – how to reduce your risk when buying a property with knotweed. Read more

Japanese knotweed – your free identification service or a full range of consultancy services. Read more

Japanese knotweed - a growing problem we offer the best professional solutions. Read more

Japanese knotweed – we have the best photographs and pictures on our website. Read more

Japanese knotweed services Thursday 21st April 2011

The Knotweed Company – the complete solution to your knotweed problem. Read more

Japanese knotweed in London and the Home Counties is a growing problem. We can offer cost effective solutions to your invasive weed problem. Read more

Giant Hogweed Risk Assessment. Monday 11th April 2011

Giant Hogweed on public land can be a danger to all users. Failure to assess the risk and take appropriate action could result in claims for compensation. Read more

A brief review of my experiences of Japanese knotweed in the West Midlands Read more

Why mortgages and Japanese knotweed are not a good mix! Read more

Spring is nearly here... Friday 18th March 2011

Springing into action for the new season. Read more

Japanese knotweed in my garden! Friday 11th March 2011

Choose between installing root barriers, or an instant solution or keep costs down with an herbicide programme. Read more

Japanese Knotweed management Plan Monday 21st February 2011

If you have Japanese knotweed on a development site, you should follow the Environment Agency's Code of Practice. Read more

Japanese knotweed in Northamptonshire Monday 7th February 2011

Our local Japanese knotweed! Read more

Japanese knotweed growing... Wednesday 2nd February 2011

Don't disturb - Japanese knotweed is asleep for the winter. Read more

The Knotweed Company and Safety Wednesday 5th January 2011

A resonsible contractor takes safety seriously Read more

2010 thoughts for the year Friday 17th December 2010

Japanese knotweed 2010 Read more

Japanese knotweed and the economy Friday 17th December 2010

Worrying news about the construction economy. Read more

Japanese knotweed and tax Tuesday 30th November 2010

Saving money when disposing of your Japanese knotweed Read more

Japanese knotweed control and eradication Thursday 25th November 2010

Japanese knotweed kill removal control eradicate Read more

How do I kill my Japanese knotweed? Tuesday 9th November 2010

kill Japanese knotweed Read more

Root barriers and Japanese knotweed Tuesday 2nd November 2010

Root barriers membranes Japanese knotweed Read more

Japanese knotweed London to Manchester Friday 22nd October 2010

London Midlands North Wales Manchester Japanese knotweed Read more

Japanese knotweed and mortgages Friday 17th September 2010

mortgage companies refuse mortgage applications japanese knotweed Read more