Are there any spiny looking green seed pods, with grayish speckled elongated seeds? It looks like a castor bean plant. It is highly toxic if it is! The seeds contain RICIN!!!!! I don't know what they do to make the castor oil from it, without including the ricin with it. But if it is a greyish green looking plant, it could be that. It is an invasive plant. The seeds, may be brownish, I haven't seen any in a while. Every now and then I will see some on the side of the road.
Wayne