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Spring is the easiest and most affordable time of the year to treat Japanese knotweed. It is crucial that you know what signs to look out for to save you money.

If they haven’t already, Japanese knotweed stems will soon begin sprouting, after lying dormant through the winter. Unfortunately, due to changing temperatures. Not only are we seeing a rise in the amounts of Japanese knotweed, we are also witnessing sprouting occurring earlier every year.

Identification in the early months of spring can be difficult, however a trained professional will be able to let you know if you have Japanese knotweed within one site visit.

Japanese Knotweed During Early Spring:

Japanese knotweed can grow 2cm a day: it will develop from red/purple shoots to fleshy green asparagus-like stems of 1 to 4cm, into dense stands of bamboo-like stalks closer by the summer which can reach heights of 3m, growing upwards of 70cm every week.

The flowers of Japanese knotweed wont emerge until late summer; this is why it is so important to know what Japanese knotweed looks like through all stages, to not just look for the large green heart shaped leaves, but for the stems, to ensure early identification and treatment.

Even after the leaves develop over the summer months, Japanese knotweed spreads predominantly underground, in which the rhizomes (roots) can spread to 7m outwards and 3m deep. These rhizomes can lie dormant, but alive, through the winter and are the reason Japanese knotweed can cause so much damage to your property.

The fierce spread of Japanese knotweed means that there are more and more cases every year. However, there is good news! – long term damage is avoidable, if you look out for the signs and organise treatment straight away.

Japanese Knotweed Treatment:

If you notice anything in your garden that appears to be Japanese knotweed, it is crucial that you contact an expert surveyor and arrange a site visit as soon as possible.

Alternatively, send a photo of the plant that you are worried about to and we will identify if you have Japanese knotweed within an hour.

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Japanese Knotweed vs Property…

Property Damage

Landlords are being advised to familiarise themselves with the dangers of the troublesome weed. Japanese Knotweed affects around 5% of all properties in the UK. It has the potential to cause structural damage to buildings and walls. This means around 1,250,000 properties are currently affected by Japanese Knotweed!

Japanese Knotweed is estimated to be responsible for £170m worth of property repairs every year. The plant is that harmful it can cause damage to concrete, tarmac and even river banks. Its roots can grow up to three metres in depth and by seven metres in direction. The is no 6-mile stretch exempt from the weed. If you own a property, whether it be residential or commercial, it is worth having a site survey just to ensure that your property is safe from possible damage.

Spotting the Weed

Initial signs that Japanese Knotweed could be present in your garden will take the form of red and purple shoots, often shooting up in the spring. These are accompanied by rolled back leaves, which often spread and grow at a quick pace, up to 10cm a day in the summer. In the winter, the weed does not die, it remains dormant and has brown stems which are hollow. To see more examples of the notorious weed click here.

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We are pleased to announce that we are now BALI accredited!

What is BALI?

Bali Japanese Knotweed Expert

The British Association of Landscape Industries is established to promote, support and inspire all professional landscapers, garden designers and landscape suppliers to be leaders of an environmentally, ethically and commercially sustainable landscape industry.

BALI is the leading Trade Association for the nation’s landscape professionals and delivers exceptional business, technical and promotional support to their

They have over 900 professional landscapers, landscape contractors, grounds maintenance contractors, interior landscapers, gardeners and garden designers listed as active members who have been fully vetted and approved members.

Their members have specialist skills in tree work, disabled gardens, garden design, gardening, fencing, hard landscaping, soft landscaping, turf and lawn care, artificial turf, trees and shrubs, hydroseeding, interiorscapes, drainage, groundworks, roof gardens and sports grounds and maintenance to name a few.

(Taken from the BALI website)

What this means to you

By Japanese Knotweed Expert having a BALI Accreditation, it gives our customers peace of mind that they are using a reliable company to complete their invasive weed removal.  To become a member, you have to sign up to their Code of Conduct, which is a pledge to carry out our business to the very highest industry standard. We invest money in training our staff and adhere to all health and safety regulations. By choosing us to complete your work, you can be assured of professional excellence, value for money and outstanding customer service. Please follow this link to see our profile on the BALI website:

Contact Us

If you would like to have your garden landscaped by a BALI Accredited company, please get in touch with us.

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What is Japanese Knotweed?

Japanese knotweed is a fast-growing, invasive weed, It is rapidly becoming one of Britain’s most invasive weeds. Japanese Knotweed can remain dormant for over twenty years, but once it begins to grow, it can spread at a pace of 1.2 metres per month and up to a whopping 10cm a day. It develops a series of underground roots and shoots, referred to as rhizomes, which can grow out for several metres from the original stand. It is characteristic by its hollow, purple stems and heart-shaped leaves. If you need more information on this, we have a page dedicated to helping our clients to identify Japanese knotweed.

Why Should I Attend Your CPD Course?

CPD stands for Continuing Professional Development and is a requirement in most industries. Anyone who is a member of a professional body is likely to have CPD requirements laid out to them. There is usually a set amount of mandatory hours required to complete annually. CPD exists to help people manage and record their own development on an ongoing basis, allowing the individual to reflect and review what they have learnt.

Japanese Knotweed Expert is proud to be a member of the CPD Certification Service. They are the leading institution for CPD accreditation, operating a strict course approval process.

As a result of our 20 years experience in the invasive weed industry, we are now offering a CPD course in which we educate you, the learner, on how to identify Japanese Knotweed. This course is immensely useful for a wide range of professionals, including but not limited to surveyors, solicitors, builders, architect and estate/letting agents.

Further information regarding our CPD course or any other services can be found on our website. If you have any questions please contact us on 0800 1337 444.