What is this plant? (Pictures included)

What is this plant? It grows in bunches in my back yard and i remember chewing on it when i was a kid ( i have a forest for a back yard)
I just want to know what it is cause i started eating it again... hope its not toxic or anything. Haha i guess we'll see if i figure it out before someone here helps me.

Pictures bellow. If they dont click please just copy and paste into URL bar.

http://usera.ImageCave.com/JamesKnight/phhoto.jpg
http://usera.ImageCave.com/JamesKnight/photo.jpg

Fallopia japonica . - http://www.kaleidoscopeflux.blogspot.com

Sugarcane.

without even looking i'm gonna say it's a WEED...