Invasive Vegetation Management & Treatment Limited


Frequently Asked Questions:


Below are a list of questions that IVM staff have been asked whilst carrying out site assessments, if you require further information regarding the questions below, or have a question for us, please use the Contact IVM link on the left of this page.


QuestionIs Japanese Knotweed poisonous?


AnswerNo, in fact there are many recipes available on the internet containing knotweed, ranging from soups to knotweed and apple crumble.


QuestionHow can I control the spread of the seeds from Japanese knotweed?


AnswerThere are no seeds on Japanese knotweed in this country, the plant is spread during ground disturbance and fly tipping.


QuestionI have heard that knotweed is nearly impossible to kill, how is it that IVM can guarantee to eradicate it?


AnswerIVM are leading the way in Japanese knotweed eradication, with all treatment methods using the latest application techniques and herbicides, this teamed with IVM's expert knowledge makes a formidable partnership - If it didn't work, we wouldn't guarantee it!


QuestionHow did Japanese knotweed get into he country?


AnswerThe Victorians brought the plant into the county, in their view it was an attractive plant - it becomes a little less attractive when it starts damaging structures and killing native species!


QuestionKnotweed looks similar to other plants, how do i know that i have got knotweed on my property?


AnswerThe quickest way would be to email a photo to a specialist, such as IVM, send a photograph to us at, we will email you back, free of charge, with the answer.


QuestionHow long will Japanese knotweed treatment take?


AnswerTreatment programs vary from within a week, to three years. Excavation will be the quickest method, but also the most expensive.


QuestionMy neighbour has got Japanese knotweed in her garden, it has now started to spread into my garden, can i force her to kill it?


AnswerIn a word - No! You cannot force her to kill the knotweed on her property, you can ask her to take action to stop it spreading onto your property. You could also take the matter to court, but this will be a long and expensive road. Installation of a root barrier is an option, but once again an expensive one. The least expensive and easiest way in most cases is to speak to your neighbour and come to some agreement that suits both parties.























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