So there's definitely a plant sprouting up from my eco earth substrate.

I have no clue where it could have come from, and I definitely did not plant it myself.

Could the crickets somehow have brought a seed in? Nightcrawlers from wal-mart?

I am at an absolute loss as to how it got there, or that it's even growing in the coco fiber substrate.

Since I don't know what kind it is, could it be harmful to my pyxie?