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  • oldgregg changed the title to Floating Pennywort

I remember 15 years working with a volunteer group trying to clean up the river Waveney near Diss - it was so thick you could not walk through it at that time.  They still have it.

That and parrots feather seem to be the worst we have - I know its not the end of the world and it doesn't kill people but there are plenty of places where this stuff just clogs the streams.

Equally you would not find it especially funny if you found Japanese Knotweed in your garden - find that and your house is virtually unsaleable!

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Floating pennywort was (and I believe still is) a huge problem on gt.ouse and cam, it grows so quick it just clogs huge areas and cutting makes it grow quicker as the cut bits carry on, I remember zigzagging along the cam avoiding what looked like roundabouts in the river floating along, it gather across wiers and blocks them as well.

Our local brook was getting full of himalayan balsam this summer blocking everything else out.

At least a regime of regular spraying can get rid of japanese knotweed.

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As a forum we could get rid of this weed really easily. Two or three members who live by the broads make it obvious that some of this weed has been cut and removed. (bits left on the bank, chat in the pub, that sort of thing.) they then advertise the stuff on e-Bay as "High calibre compost - guaranteed better results than fertiliser" £25 for a 5 kilo dry load.

The rest of us, each at different times, buy some bags. Cash on collection. None is actually paid for or of course collected!

The sellers boast in the pub, cafe or wherever, how the stuff is selling like hot cakes (and what good compost it makes)

Give it a week or so, and you won't be able to find the stuff for love nor money!.  

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Japanese Knotweed is less of a problem in selling a house now.

A spraying regime will remove it, at a cost of around 4k with a guarantee.

 The price is dropping as more companies gear up to treat it.

Building societies are less adverse to it now and regard it as a defect much like any other.

Victorian plant collectors have a lot to answer for.

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There were 3 patches of Knotweed in my garden when we bought it,, Now down to one and that's on it's way out. The most effective way is to inject stems with roundup..

From what I've read Floating pennywort is edible, and tastes A bit like it's relative.. celery.

 Giant knotweed on the other hand is very poisonous..

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You are all going to be very busy ,eating or composting it, as it regenerates from the tiniest bit left. Smoggy seems to be the only one taking it seriously, apart from his last quip, but do you want to see large islands floating around as he reports of the Gt Ouse? 

Lets see if they can control up in that area but perhaps I shall have the last laugh from my wooden box after a few years!!! 

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A couple of seasons back a group (I think from Jones marina) were going out in canoes and kayaks collecting it by hand as teasing it out was the best way to remove it, as said as soon as you cut or break it you have twice as many growing plants.

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Whilst clearly many look to make a joke out of this ,perhaps the accompanying article from the Daily Mail could, if you can stop yourselves from laughing, show what it appears to have done to the Cam in places. Look nice outside Broadsedge - wouldn't have to worry about gates then would you?

 

https://www.dailymail.co.uk/news/article-5025279/River-Cam-clogged-pennywort-weed.html

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At the risk of asking a sensible question, who would be responsible for trying to solve this problem, the EA or BA?

Now, and I am asking this as an honest question (and not as part of my soap[ box) Would dredging the lower Bure assist in any way to flush the stuff into saltier water, and would that kill it?

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It would be easy enough to seriously knock it back judging by those photographs of The Cam.

Just spray it with Glyphosphate and Diquat but I don't give any other organism in the river much of a chance.

If it takes root as described I can see it being a real nuisance because even the best collecting weed cutters still leave loads of floating debris.

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Dredging and cutting it just spread it further but yes, I think it is a combination of the two I believe. But realistically I am not sure - more the EA I think because once it is in the navigation and taken hold, there is bu**er all you can do I am afraid.

If I find out I will let you know - of course as the NW & D is privately owned and you are not even allowed up there without paying a fee, then perhaps it is the landowners responsibility. Perhaps doing what he did may well have been exactly the wrong thing to do....!!!! Hoist by your own petard is perhaps being a bit harsh but that bit below Honing Lock and the junction at the Dilham turn has always been a thorn in everyones side for many a long year, despite the protestation of a few.

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Of course part of the problem is they've been cleaning up the water. so all vegetation such as water lilies etc are growing like mad these days..

So the solution is.... Bring back pollution!!!

 

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On 18/11/2020 at 07:15, TheQ said:

Of course part of the problem is they've been cleaning up the water. so all vegetation such as water lilies etc are growing like mad these days..

So the solution is.... Bring back pollution!!!

 

You might be right, but in the long term the world would be better of without man/woman!

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