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Knotweed running under drive/patio
"Tam Inglis" wrote in message ... Hi, I've spent the last week digging and sifting the rhizome system of an infestation of Japanese knotweed. however I've now come up against the fact that it is running underneath the driveway/patio. I thought i had caught it before it would have spread there (and indeed it is relatively clear) however there was one 'crown' perhaps a meter at the closest point to the patio and as a result there two main roots heading off directly underneath the driveway and patio. I'll take the bricks and patio slabs up if nothing else presents itself but if anyone has any help/tips for removing/killing a root system underneath non-diggable area it would be *greatly* appreciated. T Please stop digging at it, you will only make matters worse. Either keep cutting it before it makes any leaves (make sure you burn what you cut off, never bin it) or use Roundup type weed killer, there is plenty of advice online as to when and how, I prefer the squirting it down the cut stem approach, which ever way you chose remember it will take at least two seasons and possibly 3. -- Charlie, Gardening in Cornwall Holders of National Collections of Clematis viticella and Lapageria rosea cvs http://www.roselandhouse.co.uk |
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