Perhaps someone can put this up as a link, please.
Sounds like it could be japanese knotweed.
Doesn't look like it though.
If you highlight it and alternate click you get go to http etc.
I'll see if I can linkify it
How tall does it get andy?
Has that done it?
The picture doesn't look like knotweed to me, but I don't know what it is.
I dont know what is is, but its not Jap Knot weed.
Where do you live andy?
Does this plant flower?
Does it have tendrils to cling on with'
Does it wind itself round other plants or structures?
Can it support itself or does it always climb, sprawl?
Sorry andy, I don't know any plants that start off looking like picture one and end up like picture 2.
Looks a bit like basil in picture 1, no idea about pic 2, very strange!
That looks very eerie growing over the house like that. How long does it take to cover the house? is that years of growing?
A couple of suggestions, Russian vine or clematis Montana. A photo of the offending plant in full growth during summer would help a lot.
A summer pic would certainly help. Pic one doesn't look like anything that could achieve that sort of growth.
I don't know any plant that could achieve that growth, I know I'm not an expert but surely it would be well known?
Wild honeysuckle maybe? although it doesn't look like one.. trying to think of something that grows that much and quickly
I can think of a few things that could do the height but none of them look the first pic at any stage of their life.
are you sure the 2 go together andy?
..I agree with steephill about it being a Russian Vine, although it would have flowered though... on top of that roof I expect... ..possibly an Ash tree too grown up alongside...?.... those green things just look like weeds to me...
Pics 1 and 2 must be from different plants -
I think Pic 1 is possibly Saponaria officinalis aka Soapwort or Bouncing Betty - grows fast and is invasive but doesn't climb.
I think Pic 2 is possibly Polygonum baldschuanicum/Fallopia baldschuanica aka Russian Vine/Mile a Minute etc etc etc.
Both of which were rampant in this garden when we moved in here - Andykites, are you my neighbour?