What grapes are these?

[JJack887]

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I have a big vine growing in the backyard, but I have no idea what kind of grapes these are. Can anyone tell me? Thanks.

 

[LandoLincoln]

I'd be cautious. They look kinda like pokeberries to me.

Or perhaps woodbine berries.

 

[Homercidal]

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I have a big vine growing in the backyard, but I have no idea what kind of grapes these are. Can anyone tell me? Thanks.

Also, FYI, those leaves do NOT look like grape leaves to me. I'd seriously recommend finding out for certain those things are edible.

 

[Homercidal]

Definitely look like Thicket Creeper, or related. Moderately toxic to humans. Good for birds, though.

 

[JJack887]

Yeah, we also have pokeberry growing in the yard as well. I guess thicket creeper does make sense... Damn. Well, at least I still have chokecherry in the yard. Thank you guys.

 

[pumpkinman2012]

As the other have posted, do not eat those, the following is taken from a quick google search

Pokeberries are shrubby plants with purple-red stems and clusters of purple berries that look grapes. Eating several berries can cause pain, nausea, vomiting, and diarrhea. Adults have eaten the roots, mistaking them for medicinal plants. Serious gastrointestinal problems have occurred, including bloody vomiting, bloody diarrhea, and low blood pressure.

 

[gratus fermentatio]

View attachment 306221

I have a big vine growing in the backyard, but I have no idea what kind of grapes these are. Can anyone tell me? Thanks.

Those are neither grapes nor poke berries, that is Virginia Creeper & THE BERRIES ARE TOXIC TO HUMANS.
http://plants.usda.gov/plantguide/pdf/pg_paqu2.pdf
Regards, GF.