How to Tame the Japanese Knotweed Beast This Summer

It’s peak growing season all across the UK and the prolonged heatwave has given all sorts of plants — and weeds — renewed vigour, as long as they get the vital water they need to grow. Japanese knotweed is among the hardiest of (unwanted) plants and has been springing up and spreading its menacing roots across estate agents’ properties since spring belatedly sprung this year.

Simply ignoring the problem is not a solution. There are real risks with Japanese knotweed, both to the property and for the owner. These include the weed’s potential for causing structural damage as it grows through cracks in walls, as well as other issues, and potential legal problems if it spreads onto neighbouring properties. It can also make a house impossible to sell, as buyers are unlikely to get a mortgage due to the presence of the weed on the property.

Dealing with Japanese knotweed when it springs up during a tenancy may not be an estate agent’s responsibility, however. It will depend on the tenancy agreement and some tenants have been shocked to discover that not only is Japanese knotweed growing in their garden — and rapidly at that — but that it’s up to them to get rid of it. Trying to do it on your own, though, is an almost impossible task.

Identifying a Japanese Knotweed Problem

Trying to figure out if you have Japanese knotweed growing somewhere on your property can be a perplexing problem and it turns out that not many people even know what it looks like. A new survey by Japanese knotweed removal firm Environet found that only 19% of those questioned could properly identify this scourge of a weed. The survey asked respondents to pick Japanese knotweed from five photographs of different plants — 81% were unable to.

“Most people have heard of Japanese knotweed, but the fact that only 19% of people in the UK can identify it from other common plants, such as bindweed and ivy, is very concerning,” said Environet managing director Nic Seal. “It’s not just about protecting one’s property from damage and decreased value; it is also about protecting oneself from the risk of being sued if the knotweed is allowed to spread.”

The clue as to whether or not you have Japanese knotweed on your property is in how it starts growing — shoots will appear and they will be reddish in colour, somewhat resembling those of bamboo. When leaves appear, they will be heart-shaped and the plant will grow incredibly quickly — up to 20cm in a day — quickly overwhelming everything in the surrounding area. The plant flowers in the late summer and the blooms will be a sort of off-white.

Japanese Knotweed Removal

For estate agents managing properties and with others up for sale, it’s almost always a futile task to try and eradicate Japanese knotweed from an infected site. The large and deep root system will ensure that, even if everything above ground is cut down, it will soon send up new shoots to take its place and the problem starts all over again.

So if you’re searching for the most effective Japanese knotweed removal solutions, there’s really only one thing you need to know: you have to enlist a professional Japanese knotweed removal firm. The investment in such services is vastly offset by the potential for damage to a building, as well as a drastic lowering of its value.

It’s likely you will need an insurance-backed guarantee of the removal of Japanese knotweed, for sale or mortgage purposes, and a good Japanese knotweed removal firm will typically be able to provide one for five years, often extendable up to 10. That’s your knotty Japanese knotweed problem killed off.

EAN Content

Content shared by this account is either news shared free by third parties or sponsored (paid for) content from third parties. Please be advised that links to third party websites are not endorsed by Estate Agent Networking - Please do your own research before committing to any third party business promoted on our website. As an Amazon Associate, I earn from qualifying purchases.

You May Also Enjoy

Breaking News

Competition for rented homes falls to lowest level in six years

More homes for rent and a drop in demand eases the pressure on renters Competition for rental homes falls to six year low with 4.8 enquiries per property Increased supply sees the number of homes available for rent up 11% on last year Meanwhile demand for rental properties falls 14% year-on-year on lower migration and…
Read More
Breaking News

Mortgage lending now supports 30% of housing stock

Mortgage lending now underpins 30% of England’s housing stock, rising to as high as 42% in the country’s most mortgage-reliant locations. At the same time, many areas of the market have seen a notable increase in the number of homes owned with a mortgage over the last three years, highlighting the continued strength and resilience…
Read More
Estate Agent Talk

Is it worth buying a fixer-upper property?

The latest research from eXp UK reveals that fixer-upper homes can be picked up for an average saving of more than £44,000, but when the cost of renovating the property is accounted for do homebuyers actually stand to make a saving? And what chance do buyers have of finding one on today’s market? Fixer-uppers are…
Read More
Breaking News

Nottingham letting agents are the busiest in Britain

The latest research from Propoly reveals that across Britain’s major cities, there are an average of 13.5 rental listings for each single letting agency branch, with the nation’s busiest agents found in Nottingham where this figure climbs to 35 properties per professional. Propoly has analysed the estimated number of current rental listings in 21 of…
Read More
Breaking News

The six protections every new-build buyer must check before signing

With 53% of homebuyers saying they would prefer a new build, demand remains high, but so do the risks if buyers fail to ask the right questions. Buying a new build often means committing to a property that is not yet finished, which makes the small print just as important. Without these protections, buyers risk…
Read More
Breaking News

Rental price and average salary tracker – February 2026

Regional divergence replaces winter slowdown as rental market shows mixed February movement Month-on-month rental prices showed a mixed picture in February. Notable increases were recorded in the East Midlands (+3.4%), North West (+2.8%), Scotland (+2.7%) and South East (+2.0%), suggesting demand has firmed in several areas. However, Northern Ireland (−6.6%), West Midlands (−1.3%), East of…
Read More