If you dig one up and there is a giant tuber under there, I'd say you can rest assured you have a pokeberry. I dug one of mine up last year and a pic of the tuber is attached. They get awesome purple berries in late summer. The birds love them & poop the berries all over so maybe not so good if u have a white car. : )
The list of critters that love this plant is pretty long: American Robin, Northern Mockingbird, Mourning Dove, Gray Catbird, Eastern Bluebird, Northern Cardinal, Great-crested Flycatcher, Eastern Kingbird, Eastern Phoebe, Yellow-bellied Sapsucker, European Starling, Brown Thrasher, Cedar Waxwing, Red Fox, Virginia Opossum, Raccoon, and White-footed Mouse all eat the berries.
I also read that a possible cure for childhood leukemia may be found in the common pokeweed. Not too bad for a weed.
I need help in indentifying an unusual plant. The plant has a flat central stalk about 2 inch's wide about a 1/4 to 3/8 inch thick with tentacles coming out at the base. It is about four feet high now it has long narrow leaves about 8 inchs long and has yellow flowers with a white center. This is a view of the flowers I will try to send a view of the Plant Later