Fallopia japonica

Japanese knotweed

Japanese knotweed is another type of ‘property problem’, in that it can be identified and treated with minimal impact. It’s effective eradication is a job for the experts, so it’s vitally important for anyone who thinks they might have an issue to seek professional advice.

Contact Insitu on 01403 740055 or email info@insituscp.co.uk

The foreign showman

What is it?

Japanese Knotweed is a non native invasive plant species.  It was introduced during the Victorian era as it makes an impressive statement piece in a large ornamental garden. It is a perennial plant which grows from rhizomes in the spring to a height of about 3m in mid summer with stiff, bamboo-like stems.

 

However, since then it has spread throughout the UK and is now considered to be problematic.  Although it is not an offence to have knotweed growing on your land if you allow it to spread onto another persons property you could be committing an offence.

Tread Carefully!

Think before you act

If you try and dig up the knotweed or cut it down and dispose of it away from your property you should be aware that the waste is classified as controlled waste and would need to be taken to a licensed waste disposal site.  This can be very expensive!

 

Japanese knotweed has become increasingly well known in recent years and is a growing problem because of the challenges it causes in the urban environment. Where the plant grows on development sites it can cause damage to hard structures and surfaces. Developers also often need to tackle the plant in order to avoid contravening the Wildlife and Countryside Act 1981.

Our Advice

Know what to do

Do

Contact the professionals. Insitu of the PCA are qualified and regulated in Japanese Knotweed management and can deliver efficient, effective and reliable treatment. Do not ignore Japanese knotweed when you see it in your garden or on your building plot. It can grow quickly and costs will grow as the plant does.

Contact the professionals. Insitu of the PCA are qualified and regulated in Japanese Knotweed management and can deliver efficient, effective and reliable treatment. Do not ignore Japanese knotweed when you see it in your garden or on your building plot. It can grow quickly and costs will grow as the plant does.

Don't

Don’t flail Japanese knotweed as this could cause it to spread. Cutting with sharp hooks, slashers etc. or hand pulling is recommended to avoid any dispersal of cut fragments.

Don’t flail Japanese knotweed as this could cause it to spread. Cutting with sharp hooks, slashers etc. or hand pulling is recommended to avoid any dispersal of cut fragments.

Don’t cause the spread of Japanese knotweed stem and crowns. If you cut down Japanese knotweed, it is best to dispose of it on site. Material taken off site is classified as waste and must be safely contained and disposed of at a licensed disposal site.

Don’t cause the spread of Japanese knotweed stem and crowns. If you cut down Japanese knotweed, it is best to dispose of it on site. Material taken off site is classified as waste and must be safely contained and disposed of at a licensed disposal site.

Don’t try to dig up Japanese knotweed as this will lead to a significant increase in stem density. Even a tiny fragment of the cut rhizome is capable of regeneration.

Don’t try to dig up Japanese knotweed as this will lead to a significant increase in stem density. Even a tiny fragment of the cut rhizome is capable of regeneration.

Don’t spread soil contaminated with Japanese knotweed rhizome. Any soil that is obtained from ground within 7m horizontally and 3m deep of a Japanese knotweed plant could contain rhizome. The rhizome is highly regenerative and will readily grow into new plants.

Don’t spread soil contaminated with Japanese knotweed rhizome. Any soil that is obtained from ground within 7m horizontally and 3m deep of a Japanese knotweed plant could contain rhizome. The rhizome is highly regenerative and will readily grow into new plants.

Don’t chip Japanese knotweed material. Mechanical chippers don’t kill Japanese knotweed. If you spread the chipped material on soil, Japanese knotweed could regrow.

Don’t chip Japanese knotweed material. Mechanical chippers don’t kill Japanese knotweed. If you spread the chipped material on soil, Japanese knotweed could regrow.

Don’t dump garden waste contaminated with Japanese knotweed in the countryside – you will be breaking the law.

Don’t dump garden waste contaminated with Japanese knotweed in the countryside – you will be breaking the law.

Don’t add Japanese knotweed to compost. Compost it separately (preferably on plastic sheeting to prevent rooting) so that you can be sure it is dead.

Don’t add Japanese knotweed to compost. Compost it separately (preferably on plastic sheeting to prevent rooting) so that you can be sure it is dead.

Don’t take Japanese knotweed to recycling centres that receive garden waste as it will contaminate the compost.

Don’t take Japanese knotweed to recycling centres that receive garden waste as it will contaminate the compost.

Don’t break the law. Remember, if you cause Japanese knotweed to spread you are guilty of an offence under the Wildlife and Countryside Act, 1981

Don’t break the law. Remember, if you cause Japanese knotweed to spread you are guilty of an offence under the Wildlife and Countryside Act, 1981

“A Superb Company” – Anna 

“Saved me a lot of money” – Peter 

“In a different league” – Tony 

How can we help?

About Insitu SCP

Please contact us to discuss your requirements and we will do our utmost to assist you. Insitu SCP are one of the most established names in building preservation in the South East of England, with over 40 years experience in the industry. You can be assured that we will identify potential issues, find the best solution and deliver long lasting results with minimal disruption.