London (change)
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10/03/2014 at 14:10

Hi, I have just come across this in a garden, have I correctly identified it as Japanese Knotweed, if so what is the next course of action as gardeners are not yet allowed to chemically treat it.

10/03/2014 at 14:13

Need to see the leaves Paul.

10/03/2014 at 14:17

hmm, it doesn't have any on at the moment. 

10/03/2014 at 14:18

Has a resemblance to Leycesteria formosa.

But as artjak says, we need to see the leaves. Shape of the whole plant and its base would be good as well

10/03/2014 at 14:19

Don't think it's Knotweed - the dreaded JK has shoots and leaves growing alternately from each side of the stem - yours looks as if the shoots are growing in pairs.  

Are there any leaves we can have a look at?

10/03/2014 at 14:21

Dove, do you know if JKWeed has slightly reddish stems?

10/03/2014 at 14:22
10/03/2014 at 14:24

..nothing like Knotweed...   might be Fennel..?

10/03/2014 at 14:26

Paul, where did you hear that gardeners cannot chemically treat it?

10/03/2014 at 14:27

I think the stems are a bit redder on JK.  Is there a lot of it Paul, and what sort of height is it just now?

10/03/2014 at 14:32

Yes leycesteria formosa does look familiar in the photos but so does JK. Does leycesteria formosa have multiple stems at the base like Japanese knotweed, she said that she thought a neighbour had some JK a while ago. 

Ah well spotted DFA, so JK does not have leaves in pairs. Ok so I think we might be onto something. I might have to go back to get more photos, I shall take photos of the base, any leaves and stems. 

10/03/2014 at 14:35

Yes the leaves grow alternately on JK Paul. My ex husband moved into a new house  a year or two ago and there was JK on the adjoining, council owned, woodland. It's been chemically treated.

10/03/2014 at 14:36

Hi artjak, I read on-line that gardeners can not treat it themselves and they would have to call in specialists. 

Hey FG, it has a clump of multiple stems at the base, bamboo like about 30cm in width.  Oh some is heigh at the back of the garden and some are a lot smaller at the front of her garden. 

10/03/2014 at 14:37

Ah ok thats good to know FG, all I have to do now is identify whatever it is, like nutcullet said it might be leycesteria formosa which I have never heard of but it looks like it might be

10/03/2014 at 14:41

If it's in various positions around the garden it might be worth asking other neighbours if they have it too. If they have, and you're in any doubt, I expect a call to the council would be worthwhile as they might come and take a look to put everyone's mind at ease.Depends how nice they are!

10/03/2014 at 14:49

Ok I will ask the neighbours when I pop over there this thursday The council will be the next option 

10/03/2014 at 15:01

Paul, when was this photo taken?  JK won't be growing yet and certainly wouldn't be that height in March, no matter where you live in the UK.  Gardeners are allowed to treat it, and should if it's on their land - glyphosate.  Treat in summer when plant is in flower, cut back stems ( they're hollow ), pour in recommended dosage of glyphostae and plug top of cut stem with cotton wool.

I don't think this is JK, by the way!

10/03/2014 at 15:03

Definitely NOT japanese knotweed!  We had it in the garden  - just one little bit - and I'm very proud to say managed to kill it dead dead dead dead dead .  Sorry.   It did become a bit of an obsession at one stage.

But this looks like friendly old fennel to me. 


10/03/2014 at 15:07

I agree, last year's fennel stems - cut them down to the base and dry them, then use them on the BBQ when you're cooking fish 

Or use them to make a bug box

Or both 

10/03/2014 at 15:07

I was confused by the feathery bits until I realised that was a willow in the background. I think it's most likely  Leycesteria formosa  and not jap knotweed.

1 to 20 of 34 messages