Perfect conditions here, no Japanese knotweed present on this visit. The trees are providing a good canopy for reduced light penetration and ivy is now covering the ground.
… or not? An interesting listen from BBC You and Yours programme questioning the 7 metre rule: https://www.bbc.co.uk/programmes/b0bd6ycp
Treating large infestations of Japanese knotweed does take time. Using stem injections six months later can have some good initial effect, but still requires long term monitoring. (Yes for those keen eyes there is more Japanese knotweed in the background of the second photo! At this visit requested not to treat it, which is why monitoring is also so important to control the activity of the plant.)
PCA’s Technical Manager for Invasive Weeds Peter Fitzsimons, spoke on the BBC Radio Ulster – On Your Behalf programme about Japanese Knotweed. The programme discusses ‘the issues with Japanese Knotweed, what to do and what not to do when you find it on your property‘ To listen please click the link, the article is 27 minutes in: https://www.bbc.co.uk/programmes/m00003t3
There has been much in the press about Japanese knotweed this week; here is a link to what we think is a more balanced approach from the PCA: https://www.property-care.org/trade-association-sets-the-platform-for-debate-around-new-japanese-knotweed-findings/
The judgment in the Waistell v Network Rail case has concluded that once Japanese knotweed encroaches onto another property this amounts to physical damage and is an actionable nuisance. For the full report click here: https://www.judiciary.uk/judgments/network-rail-infrastructure-limited-v-stephen-williams-and-robin-waistell/
An interesting listen – This article includes a discussion on the up-coming Williams vs Network Rail case (claim for compensation by a private property owner living adjacent to a railway embankment with a long-standing JKW infestation); how it has progressed so far and its implications for setting legal precedents for future (potential) claims.
Click here to listen: https://www.bbc.co.uk/programmes/b0b7fj36 (After the first 30 seconds jump to 19 minutes 45 seconds to catch the start of the feature which lasts approximately 8 minutes).
Interestingly, Japanese knotweed in the UK is from the female clone and is therefore incapable of setting seed, yet is still able to spread at an alarming rate if untreated. Read more here: https://www.telegraph.co.uk/gardening/plants/11285502/Do-plants-have-a-gender.html
An interesting formation of Japanese knotweed I found last week. Its a little stressed but leaves should unfold in the next week or so.