Hello,

I am from Germany. In my backyard, there is a plant I cannot identify. Found in northern of Germany. Here is its pictures. Please help us identify it.

Hallo, Junglewanderer!
I really really hope I am very wrong. My first thought is Japanese Knotweed, a terrible invasive around here.
Hopefully the experts here will disagree with me!

If it is Japanese Knotweed (Reynoutria japonica) - formerly known as Fallopia japonica, it's considered invasive in many countries: https://en.wikipedia.org/wiki/...

More photos for comparison on this page: http://www.virboga.de/Reynoutr...

Fallopia japonica

Around here this plant really took over along the Saddle River and killed just about every other vegetation. Whenever we see this plant starting up on our own place in NE Pennsylvania, we go after it with a Machete, repeatedly!!
I highly recommend going after it to eradicate it and not let it take over!!

Ursula said:Hallo, Junglewanderer!
I really really hope I am very wrong. My first thought is Japanese Knotweed, a terrible invasive around here.
Hopefully the experts here will disagree with me!

omg! you are right!! I have to do something with this. Thank you

That's it! Absolutely YES! Thank you so much. We'll try to remove it as soon as possible.

islander said: Fallopia japonica

I agreed too. That's awful to know. Thank you