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Japanese knotweed set for early take off

Warm, wetter weather is providing a rich environment for Japanese knotweed to thrive across the UK.

Reports have been coming in to the Property Care Association of early growth of the plants’ distinctive red stems in February, well ahead of its usual growing season.

According to Daniel Docking, the PCA’s Invasive Weed Control Group technical manager, the current climate conditions could have a detrimental impact on native plant species.

Daniel said: “We can still expect late season frosts and dry weather in March and April, but Japanese knotweed has already started to establish itself and the resilience of the plant will mean it is in a strong position to thrive.

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“At the moment many plants are doing well due to the weather conditions, including native species.

“But we’d still suspect the temperature to drop, meaning many plants will slow down their growth pattern.

“However, Japanese knotweed will be largely unaffected by these changes and that means it can start to dominate environments, with more opportunities to spread.”

The PCA’s Invasive Weed Control Group (ICWG) is a collective group of industry professionals, which provides clear guidance on best practice and standards, as well as being a reference point for property professionals and helping homeowners to find reliable, competent and trustworthy invasive weed contractors.

Daniel Docking added: “As Japanese knotweed becomes more visible, we encourage anyone with concerns about the plant to seek expert help.

“Advice sought quickly will help to control and manage the situation effectively.

“Japanese knotweed is tied to legislation, which means landowners have a responsibility to manage infestations responsibly.

“Our ICWG members have a range of options to treat infestations, so it’s essential to engage a competent Certificated Surveyors in Japanese knotweed (CSJK) who will have the specialist skills and knowledge to identify Japanese knotweed or any other invasive plants that may be present.”

Daniel Docking

More details about the PCA’s Invasive Weed Control Group can be found at

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