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Post by Lou78W on Oct 25, 2011 10:28:27 GMT
There is another very invasive riverbank plant I read about in the RHS magazine, its a relative of impatiens (I think it was called Balsam), and it has seed pods which when they 'pop' throw seeds in all directions and those that go into the river float down and grow new plants elsewhere. Thats right Peony....Himalayan Balsam.....as Floydie says, very pretty flowers, but a real menace
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Post by peony on Oct 25, 2011 12:01:08 GMT
There is another very invasive riverbank plant I read about in the RHS magazine, its a relative of impatiens (I think it was called Balsam), and it has seed pods which when they 'pop' throw seeds in all directions and those that go into the river float down and grow new plants elsewhere. Thats right Peony....Himalayan Balsam.....as Floydie says, very pretty flowers, but a real menace Yes Lou, that's the one I was thinking of, thanks for its proper name. ;D
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Post by Geranium on Oct 25, 2011 13:39:00 GMT
Unfortunately, we get seedlings of Himalayan Balsam on our stream bank. The seeds must float down, because the nearest plants are at least 200 yards away. At least they're easy to pull up!
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Post by wildlifefriendly on Nov 13, 2011 18:25:49 GMT
Japanese knotweed can produce seeds, but it is extremely rare for these seeds to germinate. OK but if it doesn't spread by seed, how does it spread spread so far? WF mentions in her post that it grows by a river, if just a tiny piece of root got into the river and was washed downstream and into the riverbank it could then grow perhaps miles away from the original plant. I took the dog along the river today, there were numerous clumps of it which had been washed down stream by the recent rains. I shudder to think how many little bits of root there are that I couldn't see, the roots snap so easily.
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Post by merlin on Nov 13, 2011 19:10:06 GMT
WF mentions in her post that it grows by a river, if just a tiny piece of root got into the river and was washed downstream and into the riverbank it could then grow perhaps miles away from the original plant. I took the dog along the river today, there were numerous clumps of it which had been washed down stream by the recent rains. I shudder to think how many little bits of root there are that I couldn't see, the roots snap so easily.
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Post by grindle on Nov 14, 2011 5:38:32 GMT
it's quite worrying when you see just how easily it can spread like that
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Post by merlin on Nov 14, 2011 6:27:37 GMT
It is G but also worrying that these new JK eating bugs may eat all the JK and then look for something else
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Post by Deleted on Jul 7, 2012 10:20:54 GMT
I am also dealing with Japanese knotweed. Recently i have also got some knotweed killer spray also. But still i didn't use it. I hope it would definitely work to destroy Japanese knotweed from my garden. But i also worry because with this my some valuable plants would also destroy.. Japanese Knotweed Contractors
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Post by Cherry on Jul 7, 2012 13:15:52 GMT
Abbotmorris, are you saying that there is a specific spray for Japanese Knotweed but you don't want to use it? If you did not try it because you were worried about other plants, did you get the contractors which you supplied in a link? It is not quite clear to me, unless you are involved with the contractor.
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Post by floydie on Jul 8, 2012 9:05:22 GMT
There is a now fairly large plant growing on the land behind next doors garden, I'm worried it will spread my way . The local council has been informed months ago but yet its still there and growing strongly .
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Post by Rosie on Jul 8, 2012 18:02:48 GMT
There is a now fairly large plant growing on the land behind next doors garden, I'm worried it will spread my way . The local council has been informed months ago but yet its still there and growing strongly . Get onto them again Emma, if that gets into your garden it will be a nightmare to get rid of.
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Post by floydie on Jul 8, 2012 21:39:19 GMT
Yes i think i will have to and/or environmental health
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Post by Geranium on Jul 9, 2012 5:53:38 GMT
You really must, Emma - don't delay, as it spreads so rapidly. We had it in Kent and I never managed to eradicate it. Since then, there are better and more effective ways of dealing with it.
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Post by floydie on Jul 9, 2012 19:51:50 GMT
I will get on to them tomorrow, had no time today as I was sat waiting around in the hospital most of the day due to Beth's broken finger .
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Post by Cherry on Jul 9, 2012 20:23:34 GMT
Ouch! Poor Beth.
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