It is Juniperus virginiaiana, eastern red cedar. Rooting them is an exercise in futility. Highly unlikely you will get any to root. If you are considering these for their bonsai potential, the species is very difficult for bonsai. They have a lot of issues. If you want to try it, collect some seedlings or small plants. I live on a bit over 8 acres in NW Virginia. There are, without exaggeration, well over a thousand growing on this small parcel of land. I have not seen one here in 35 years that I would consider suitable bonsai material.