chinchek787 wrote:
Is this bamboo and if it is what species is it? I found it growing out
of nowhere in my backyard.

It is in the same family, but is not bamboo... This is a grass of some
type. I was about to call it a "common" grass, because it looks a lot
like the native grasses we have around here. But perhaps it is not
common where you live.

Cheers!