Fallopia; Russian Vine:
Don’t buy fallopia ever!
This thug of a plant would grow over and swamp your house given half a chance.
If you are unlucky enough to have some, you need to cut it right back and keep applying a systemic weedkiller to eradicate it – it will take a couple of years but keep going it is worth it.
We haven’t used fallopia in any of our small garden designs – but we do use lots of other plants that are much better (we think).
Why don’t you take a look