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

Housing Insight Report October 2025

The latest figures reveal a steadier, more confident property market, with committed buyers driving sales and rental arrears falling to their lowest level since 2022. In spite of slight dips in demand, rising stock levels and stabilising rents signal a sector gradually finding its balance. Residential sales Prospective buyer registrations dropped in October 2025 The…
Read More
Breaking News

9 luxury property features to impress Christmas guests

9 of the fanciest home features to impress your Christmas guests – And how much they’ll set you back As the festive season approaches and we prepare to welcome guests into our homes, Enness Global has identified nine of the most extravagant and fancy home features that define true luxury at Christmas. But impressing the…
Read More
Rightmove logo
Breaking News

No acceleration in rental EPC improvements despite policy push

Rightmove’s 2025 Greener Homes Report reveals: Energy efficiency of homes continues to steadily improve, but slowly: Rental sector stock still more energy efficient than resale stock Both markets have seen a 3% year-on-year jump in proportion of homes with at least an EPC rating of C (58% of homes for rent, 46% of homes for…
Read More
Breaking News

London renters making it onto the ladder without a deposit

Developers helping London renters onto the property ladder without a deposit, when the Government won’t The latest insight from London’s largest lettings and sales estate agent brand, Foxtons, has revealed that despite the Government providing no new support in the recent Budget for first time buyers, a growing collaboration between developers and lenders is helping…
Read More
Breaking News

Prime London Sees Post-Budget Surge in £2m+ Listings

The latest research from prime London property experts, Jefferies London, reveals that, just two weeks on from the Autumn Budget and its newly announced prime property surcharges, an estimated 444 homes priced at £2m or more have been listed for sale across the capital. These new listings account for around one in 10 (9%) of…
Read More
Breaking News

2026 Will Test BTR’s Potential and Government’s Resolve

By Justine Edmonds, Head of Build to Rent / Leasing Strategies, LRG Throughout 2025 I have spent hours in meetings with and on discussion panels with institutional investors, developers and local authorities. And everything I’ve picked up on in the last year suggests that 2026 will be a crossroads for Build to Rent (BTR). The…
Read More