is this japanese knotweed

Hi guys/girl
please could you give me some advice.
We had a conservatory build 4 year ago and just this growing from inside the cavity wall...just had the company out and it seem like this little beastie is coming in under the conservatory wall and into the cavity.....

we found a vine like crawler coming from next door, and have found a few of the under artificial grass.

both my neighbours are great and their gardens are pretty tidy (though she doesn't get out as much as shes used too)


can anyone tell me if its knotweed? if so? how do we stop it?

 

Doesn't look like it to me.
However I'm used to seeing it planted and much larger.

It's usually a more red colour.

 

Marestail and bindweed I believe. The first is VERY VERY difficult to get rid of. The second may be bindweed, also difficult to shift (we have it in abundance on our allotment) just try to keep on top of it. The roots of bindweed are very white so easily seen but it breaks easily so take care removing it. Best wishes, Tony.

 

The first is horsetail. A perennial Weed. Unfortunately it's a blighter to get rid of. You'll need to keep spraying/pulling to get rid. I agree with car crash, it doesn't have the properties of knotweed. It looks like a climber.

 

Might be better off leaving it and using a weed killer to kill the root, obviously with marestail this is rather difficult...

 

looks like Mares Tail and Bindweed to me, and they are both a pain to get rid of but not as alarming as JNW.

Pretty sure plants shouldn't be growing through your home as it is, I'm no expert but I would be getting a surveyor out. The other guys are much wiser than me, I hope they can be more helpful.

 

It looks like two different plants to me. The one in the top photo, on the windowsill, looks like Marestail, Horsetail (Equisetum). The plant on the left of the lower picture with the more triangular leaves looks like bindweed.
The Marestail could be a bit of a problem as it is deeprooted and tough, the bindweed is easily pulled out but it sprouts from the thick white roots so remove these if possible. Glyphosate in gel form applied to the stem/leaves will kill both but persistence is required. With the Marestail bruise the stems before applying the weedkiller, this helps absorption of the weedkiller.

 

thanks everyone....just found some more between fence panels, with small while flower (bindweed) it is a little climber isn't he ;-) wrapped around everything.
ive put weed killer down cavity and will give it another few treatment over the next few months

just heard all the knotweed horror stories and freaked out a bit ;-)

cant believe it managed to get into the cavity though...

thanks for all your help.....will certainly sleep better tonight

 

Mares-tail, I was always told, is a plant that has been around since before the dinosaurs. I wouldn't be surprised. It's difficult indeed to kill.

It's a shame that Convolvulus too, is such a pest, because I rather like the white trumpet shaped flowers. I had a big bindweed problem in Handsworth, in the 1960s. I finally had to use a total weedkiller to be shot of it. Couldn't use the ground for three years afterwards, but it eradicated the bindweed; for about three months!

Good luck!

 

Agree with NigelJ. As well as bruising the leaves (I stand on the stringy leaves and gently roll the leaves on the ground without breaking them) I also doze them with a squirt of washing up liquid, makes the weed killer stick better. If you are persistent and repeat the process on any regrowth it does work in time. Had loads here when we 1st moved here and now I have to hunt to see if any has returned.

 

Oh smacked wrist for me then @shiney.I didn't know I was being naughty! Maybe post Brexit we will get rid of some of the ridiculous rules and regs but hae ma doots on that.