SteamyTea Posted July 18, 2021 Share Posted July 18, 2021 Link to comment Share on other sites More sharing options...
Russell griffiths Posted July 18, 2021 Share Posted July 18, 2021 Ha ha, get the glyphosate out. ??☠️☠️ Link to comment Share on other sites More sharing options...
Ronan 1 Posted July 18, 2021 Share Posted July 18, 2021 Oh no.... fecking horrible stuff. Did it come from neighbours "managing" it. Link to comment Share on other sites More sharing options...
SteamyTea Posted July 18, 2021 Author Share Posted July 18, 2021 No idea where it came from, the area has been free of it for several years now. Glyphosated it, but that will probably kill some stuff around it, including the echiums and bamboo. Link to comment Share on other sites More sharing options...
Russell griffiths Posted July 18, 2021 Share Posted July 18, 2021 2 hours ago, SteamyTea said: No idea where it came from, the area has been free of it for several years now. Glyphosated it, but that will probably kill some stuff around it, including the echiums and bamboo. Stem inject it, don’t spray. Large syringe. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted July 18, 2021 Author Share Posted July 18, 2021 Luckily it has taken root in a large planter, so when it dies down a bit, I can remove it, along with the bamboo. Link to comment Share on other sites More sharing options...
Big Jimbo Posted July 18, 2021 Share Posted July 18, 2021 make sure you notify the council (As Jap knot weed is a notifibiable weed) just so they can log it against your property, and make sure it comes up on any future searches and de-values your property accordingly... Or, Kill the bar-steward, and tell nobody. Had some at my daughters tiny garden 10ft x 10ft total garden size. i spent 2 years spraying the crap out of it on a weekly basis. ( Over the top, and a waste of weed killer). Then dug it out, took 12" of soil out, and stuck 6"of concrete over 6" of rubble, over a geotex membrane.......I've never seen it again. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted July 18, 2021 Author Share Posted July 18, 2021 Cornwall had a large program to eradicate JKW a decade or so back. It was largely successful and I have not seen any for a good few years now. So this was a complete surprise. 15 years ago I started spraying it when it appeared in the car parking area. Couple of years of monthly spraying and it went away. Shall go out and check the area tomorrow when everyone has gone to work. If it really devalued property, why have homes in Cornwall always been relatively expensive. Link to comment Share on other sites More sharing options...
Oz07 Posted July 18, 2021 Share Posted July 18, 2021 I see companies promoting opportunities for reps to take up reporting of this. Presume there is some bizzare financial incentive Link to comment Share on other sites More sharing options...
SteamyTea Posted July 18, 2021 Author Share Posted July 18, 2021 34 minutes ago, Big Jimbo said: make sure you notify the council (As Jap knot weed is a notifibiable weed) Not any more. https://www.gov.uk/guidance/prevent-japanese-knotweed-from-spreading Link to comment Share on other sites More sharing options...
joe90 Posted July 18, 2021 Share Posted July 18, 2021 We have some around me on verges etc, we take it in turns to spray it and it’s no worse. Link to comment Share on other sites More sharing options...
SteamyTea Posted July 18, 2021 Author Share Posted July 18, 2021 Does seem strange that it found its way into my planter. Right where I found the crossbow bolt. Link to comment Share on other sites More sharing options...
MikeSharp01 Posted July 18, 2021 Share Posted July 18, 2021 20 minutes ago, SteamyTea said: Right where I found the crossbow bolt. Do you think some evil genius is going around coating crossbow bolts with JKW spores and then loosing them off at the planters of people they find tiresome. Link to comment Share on other sites More sharing options...
SteamyTea Posted July 18, 2021 Author Share Posted July 18, 2021 9 minutes ago, MikeSharp01 said: Do you think some evil genius is going around coating crossbow bolts with JKW spores and then loosing them off at the planters of people they find tiresome. Don't know, I can't get into others tiny minds. Link to comment Share on other sites More sharing options...
MikeSharp01 Posted July 18, 2021 Share Posted July 18, 2021 51 minutes ago, SteamyTea said: Don't know, I can't get into others tiny minds. Evil genius types tend not to have tiny minds - the clue is in the word genius, but I appreciate the sentiment... Link to comment Share on other sites More sharing options...
dpmiller Posted July 18, 2021 Share Posted July 18, 2021 comparatively, obviously Link to comment Share on other sites More sharing options...
joe90 Posted July 18, 2021 Share Posted July 18, 2021 1 hour ago, SteamyTea said: Right where I found the crossbow bolt Eh, what crossbow bolt?, can’t this be spread through seeds blown in the air??? Link to comment Share on other sites More sharing options...
SteamyTea Posted July 18, 2021 Author Share Posted July 18, 2021 31 minutes ago, joe90 said: what crossbow bolt I found a broken one in my garden. 1 Link to comment Share on other sites More sharing options...
A_L Posted July 18, 2021 Share Posted July 18, 2021 47 minutes ago, joe90 said: can’t this be spread through seeds blown in the air??? In the U.K. all Japanese Knotweed is propagated by vegetative cuttings from a single female plant. https://www2.le.ac.uk/departments/genetics/people/bailey/res/f-japonica Link to comment Share on other sites More sharing options...
joe90 Posted July 19, 2021 Share Posted July 19, 2021 However…..from the above piece…. Since only female plants occur in Britain they are unable to reproduce sexually, but are available for pollination by any related species in the area. This they do very well, and most seed collected from F. japonica in Britain is the result of pollination by the related Russian Vine (Fallopia baldschuanica), to give Fallopia x conollyana. In locations where Japanese Knotweed grows close to male plants of Giant Knotweed or the hybrid F. x bohemica, enormous amounts of seed can be produced some years. ? Link to comment Share on other sites More sharing options...
Triassic Posted July 19, 2021 Share Posted July 19, 2021 22 hours ago, SteamyTea said: Luckily it has taken root in a large planter, so when it dies down a bit, I can remove it, along with the bamboo. Let it dry out and then burn the lot, bamboo and all, not worth the risk trying to separate them. Link to comment Share on other sites More sharing options...
Triassic Posted July 19, 2021 Share Posted July 19, 2021 22 hours ago, Big Jimbo said: make sure you notify the council (As Jap knot weed is a notifibiable weed) just so they can log it against your property, and make sure it comes up on any future searches and de-values your property accordingly. Nooooo. Just burn the planter, knot weed and all. Link to comment Share on other sites More sharing options...
DavidFrancis Posted July 19, 2021 Share Posted July 19, 2021 Google reckons it could be Himalayan honeysuckle. 1 Link to comment Share on other sites More sharing options...
SteamyTea Posted July 19, 2021 Author Share Posted July 19, 2021 Pretty sure it is knotweed. May burn it. Or just take it to the dump where they have a special place for it. Link to comment Share on other sites More sharing options...
PeterW Posted July 19, 2021 Share Posted July 19, 2021 Leaf position is incorrect for knotweed - it grows from alternate nodes on either side. Also the leaf colouring is unusual for knotweed as it is ordinarily green with red veins. That looks more like Himalayan Honeysuckle as @DavidFrancis said. Link to comment Share on other sites More sharing options...
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