About 20" green stems with green leaves and tiny white leaves

These are growing in a shady area along a tall retaining wall.

 

Update:
I received information that this is Virginia Knotweed aka Jumpseed.
Can anyone tell me if it is edible or used for medicinal purposes?

 

No idea !

 

invasive weed. PULL it FAST! it has an extensive root system.

 

Thank you, Carolyn.
We plan on digging the whole area up, so I won't worry about trying to save anything.