It is virginia creeper. It is a nice native vine. It will grow on a fence or trellis if you want it to, but it will also just spread on the ground as a ground cover. Flowers are kind of inconspicuous, but it gets berries that birds like and then it puts on a nice show of fall foliage color.
I agree with rainbowgardener. I have lots of virginia creeper in my woods where it is always a rich dark green. But see how pretty it gets when it has full sun in the fall.
Yep, Virginia Creeper. I've got some I planted on my back fence.
Advantages -- fast growing, good cover, fantastic fall color, easy to grow on fences etc needing cover
Disadvantages - no leaves in winter, just the naked vines. Also tends to spread so you gotta manage it if you don't want it running all over as the seasons go on.
I like creeper. It's a good alternative to Boson Ivy here in the midwest. Cheers.
Beware! With your location, similar to mine in temps, can be the vine from he-l. Meaning it likes itself, alot. I am at low battle with one I thought to encourage, smarty pants turned dumb pants here. I haven't used R-Up, but tempted.