I grew up eating spring poke weed..it is great mixed with lambsquarter and sour dock. The person who said the roots are poison are absolutely correct. When my kids were small, they reached thru the yard fence to gather some poke berries "because they were so pretty" I caught them in the act, but they had purple smeared all around their mouth. I called poison control center who said their stomachs had to be emptied immediately! Our local Dr gave them the stuff (I cant spell it) and in 20 minutes they were empty.. and no sign of the berries in the vomit..thankfully!! They were little and all the excitement made them not want to talk,so we could not get the information out of them if they had swallowed them or not.
Apparently, the birds can eat what we cannot. The poison control center said if they had stayed in their stomachs 2 hours, it would be too late ..they would have died.