How do professionals get rid of Japanese knotweed?

A glyphosate-based weedkiller is the best option here, though bear in mind it can take several applications, over up to four seasons, to completely eradicate Japanese knotweed. It’s best applied to cut canes so the weedkiller can thoroughly penetrate the plant and roots.

What are the best control methods for Japanese knotweed?

Cutting the knotweed only removes the aboveground portion and only serves to stimulate the below ground rhizome. In some cases weekly mowing can eventually draw down enough of the plant’s reserves to kill it. The best approach to control is through a combination of cutting and herbicide application.

How is Japanese knotweed being controlled?

Despite claims by some companies, Japanese knotweed cannot be killed or eradicated by herbicide application alone. It can be controlled via herbicide treatment or fully removed from a property by excavation. Often, the most cost-effective method of controlling Japanese knotweed is a Herbicide Treatment Programme (HTP).

Can you build on land that has Japanese knotweed?

It is possible to build on land with Japanese knotweed while it is being treated, depending on the size of the infestation, the choice of treatment and the planned development.

Is it worth buying a house with Japanese knotweed?

Japanese knotweed can devalue a house between 5-15% [4], however, in some more extreme cases, the plant has been known to almost completely devalue properties. Careful consideration of the severity of the infestation and impact on the property’s value is needed when buying a property affected by Japanese knotweed.

Can you sell a house with Japanese knotweed?

Can you sell a property with Japanese knotweed? You can sell a property with Japanese knotweed, however, you may need to take some extra measures to ensure that potential buyers feel comfortable purchasing the house and confident that they will be able to secure a mortgage from their bank.

What kills Japanese knotweed permanently?

To permanently kill Japanese Knotweed, you must:

• Identify Japanese Knotweed as soon as possible to prevent further growth and damage.
• Cut down and remove the canes.
• Apply Glyphosate based Weed killer.
• Wait at least 7 days before pulling the weeds.
• Mow the plants weekly.
• Reapply Glyphosate.

Does Roundup work on knotweed?

Many have concluded that the only way to kill knotweed is to apply glyphosate (Roundup, Rodeo) between August and the first hard frost — year after year after year — until it stops resprouting. Glyphosate is widely considered the most effective herbicide for knotweed, but it will kill any other greenery it contacts.

Can you cut down Japanese knotweed?

Removing Japanese Knotweed. Cut down and remove the canes. Japanese knotweed will not regrow from cut canes, so it’s important to trim down as many as you can. Use loppers to cut off the canes as close to the ground as possible, then remove the cut pieces from your lawn or garden. Apply glyphosate weedkiller.

Can I sell a house with Japanese knotweed?

Do surveyors look for Japanese knotweed?

Surveyors have a duty of care to both the homebuyer and the lender to identify Japanese knotweed during a survey, even if the seller has attempted to hide it.

Do estate agents have to declare Japanese knotweed?

There’s a legal duty on Estate Agents to disclose the presence of Japanese knotweed under CPR, so in our experience it’s best to be honest with the buyer to gain their trust which should make any transaction go through without a hitch.

How do you get rid of Japanese knotweed?

Apply glyphosate weedkiller. Glyphosate weedkiller , like Roundup, can help you get rid of Japanese knotweed. Take care to apply it only to the weeds, as it will kill nearly any vegetation it touches. Spray the weedkiller onto the plants immediately after cutting down the canes.

What is the law relating to Japanese knotweed?

Japanese Knotweed is classed as a controlled plant under the Wildlife and Countryside Act 1981. This means that, whilst is not illegal to have the plant on your property, it is against the law to allow it to spread, including allowing the roots to spread underground into neighbouring property.

Can I get rid of Japanese knotweed myself?

You should not attempt to get rid of the Japanese knotweed yourself if you are hoping to sell your property soon. DIY attempts at removing or treating Japanese knotweed are rarely successful, but even in the cases where they are, homeowners are still legally bound to mention that the plant has affected the property.

What do you do with Japanese knotweed?

Look up the regulations concerning Japanese knotweed in your area.