This second Batch of photos looks like Grape leaves....could be Muscidine I guess but really looks like regular grapes to me... I think I'd get things out of the way of it and see if it produces fruit....
@Douglas, LOL....My Hubby, southern Born and raised...speaks fondly of eating polk.....I on the other hand never have...and unless things change a LOT I hope never to do so....LOL
Toxicity: All parts of common pokeweed are toxic to humans, pets and livestock. Roots are the most poisonous, leaves and stems are intermediate in toxicity (toxicity increases with maturity), and berries are the least toxic.
Get rid of this before those see fall off and make more. Spray it because the roots are large tublars and deep! If you decide to dig it up, cut off the top first so the seeds won't drop off and don't think for a minute you can pull it up!
http://www.oardc.ohio-state.edu/weedguide/si...